In Classical spelling, individual letters mainly corresponded to individual phonemes (
alphabetic principle). Exceptions include: • The letters , , , , and , each of which could represent either a short vowel or a long one. The long vowels were sometimes marked with
apices, as in , , , and , while long could be marked with
long I . Since the 19th century, long vowels have been marked with
macrons, as in , , , , and ; sometimes,
breves may also be used to indicate short vowels, as in , , , , , and . • The letters and , which could either indicate vowels (as mentioned) or the consonants and , respectively. In modern times, the letters and began to be used as distinct spellings for these consonants (now often pronounced very differently). • Digraphs such as , and , which represented the diphthongs , and . In a few words, these could also stand for sequences of two adjacent vowels, which is sometimes marked by the use of a
diaeresis in modern transcriptions, as in , and . • The digraphs , and , standing for the aspirated consonants , and (initially written in
loanwords from Greek, and subsequently in some native Latin words and loanwords from Italic languages which used the same sounds).
Consonants Below are the distinctive (i.e.
phonemic) consonants that are assumed for Classical Latin.
Phonetics • Latin may have had the labialized velar stops and as opposed to the stop + semivowel sequences and (as in the English
quick or
penguin). The argument for is stronger than that for . • The former could occur between vowels, where it always counted as a single consonant in Classical poetry, whereas the latter only occurred after , where it is impossible to tell whether it counted as one consonant or two. The labial element, whether or , appears to have been palatalised before a front vowel, resulting in or
Voiced labial–palatal approximant (for instance would have sounded something like ). This palatalisation did not affect the independent consonant before front vowels. • and before were not distinct from and , which were allophonically labialized to and by a following such that writing a double was unnecessary. This is suggested by the fact that and (from Old Latin and ) are also found spelt as and . • , and were less aspirated than the corresponding English consonants, as implied by their usually being transliterated into Ancient Greek as , and , and their pronunciation in most Romance languages. In many cases, however, it was not the Latin and , but rather and , that were used to render Greek word-initial and in borrowings (as in , > , ), especially borrowings of a non-learned character. This might suggest that the Latin and had some degree of aspiration, making and more suitable to approximate the Greek sounds. • , and were pronounced with notable aspiration, like the initial consonants of the English
pot,
top, and
cot respectively. They are attested beginning c. 150 BC, in the spellings , and , at first only used to render the Greek , and in loanwords. (Previously these had been rendered in Latin as , and .) From c. 100 BC onward , and spread to a number of native Latin words as well, such as and . When this occurred it was nearly always in the vicinity of the consonant or , and the implication is that Latin , and had become aspirated in that context. • was found as a rendering of the Greek in borrowings starting around the first century BC. (In earlier borrowings, the Greek sound had been rendered in Latin as .) In initial position, appears to have been pronounced , and between vowels it appears to have been
doubled to (counted as two consonants in poetry). • was unvoiced in all positions in Classical Latin. Previously, however, Old Latin written appears to have been voiced to between vowels (intervocalic), ultimately becoming written (
rhotacism). Cicero reports the family-name being changed to in the fourth century BC, which may give some idea of the chronology. Afterward new instances of developed between vowels from sound-changes like the degemination of after long vowels and diphthongs (as in > ), which
Quintilian reports to have happened a little after the time of
Cicero and
Virgil. • In Old Latin, final after a short vowel was often lost, probably after first
debuccalizing to , as in the inscriptional form for (Classical ). Often in the poetry of
Plautus,
Ennius, and
Lucretius, final did not count as a consonant when followed by a word beginning with a consonant. By the Classical period this practice was described as characteristic of non-urban speech by Cicero. or perhaps in free variation with . Lloyd, Sturtevant, and Kent make this argument based on misspellings in early inscriptions, the fact that many instances of Latin descend from
Proto-Indo-European , and the outcomes of the sound in Romance (particularly in Spain). • In most cases was pronounced as a bilabial nasal. At the end of a word, however, it was generally lost beginning in Old Latin (except when another nasal or a plosive followed it), leaving
compensatory lengthening and
nasalization on the preceding vowel except in a number of monosyllabic words, where it often survives as or a further development thereof. • and
merged via assimilation before a following consonant, with the following consonant determining the resulting pronunciation: bilabial before a bilabial consonant (e.g. and ), coronal before a coronal consonant (e.g. and ) and velar before a velar consonant (e.g. , and ). This occurred both within words (e.g. may have sounded something like ) and across word-boundaries (for instance with , or ). • assimilated to a
velar nasal before . Allen and
Greenough say that a vowel before is always long, but W. Sidney Allen says that is based on an
interpolation in
Priscian, and the vowel was actually long or short depending on the root, as for example from the root of but from the root of . probably did not assimilate to before . The cluster arose by
syncope, as for example from . Original developed into in , from the root of . • was strongly
velarized in
syllable coda and probably somewhat
palatalized when
geminated or followed by . In intervocalic position, it appears to have been velarized before all vowels except . • generally appeared only at the beginning of words, before a vowel, as in , except in compound words such as (pronounced something like ). Between vowels, it was generally as a geminate , as in (pronounced something like ) except in compound words such as . This is sometimes marked in modern editions by a
circumflex on the preceding vowel, e.g. , , , etc. could also have varied with in the same
morpheme, as in and , and in poetry one could be replaced with the other for
metrical purpose. • was pronounced as an approximant until the first century AD, when and intervocalic began to develop into fricatives. In poetry, and could be replaced with each other, as in ~ or ~. Unlike it remained a single consonant in most words, e.g. in , although it did represent a double in borrowings from Greek such as the name . • was generally still pronounced in Classical Latin, at least by educated speakers, but in many cases it appears to have been lost early on between vowels, and sometimes in other contexts as well ( It indicates not that the vowel is long but that the first syllable is
heavy from the double consonant.
Vowels Monophthongs Classical Latin had ten native phonemic monophthongs: the five
short vowels , , , and , and their long counterparts , , , and . Two additional monophthongs, and , were sometimes used for in
loanwords from Greek by educated speakers, but most speakers would have approximated them with or .
Long and short vowels The short vowels , , and may have been pronounced with a relatively
open quality, which may be approximated as , and the corresponding long vowels with a relatively close quality, approximately . That the short and were, as this implies, similar in quality to the long and is suggested by attested misspellings such as: • for • for • for • for most likely had a more open allophone before . and were probably pronounced closer when they occurred before another vowel, with e.g. written as in some inscriptions. Short before another vowel is often written with the so-called
long I, as in for , indicating that its quality was similar to that of long ; it was almost never confused with in this position.
Adoption of Greek upsilon was used in Greek loanwords with
upsilon . This letter represented the
close front rounded vowel, both short and long: and . Latin did not have this sound as a native phoneme, and speakers tended to pronounce such loanwords with and in Old Latin and and in Classical and Late Latin if they were unable to produce and . ======== An intermediate vowel sound (likely a close central vowel or possibly its rounded counterpart , or even ), called , can be reconstructed for the classical period. Such a vowel is found in , , (also spelled , , ) and other words. It developed out of any historical short vowel in a non-initial open syllable by vowel reduction, probably first to , later fronted to or . In the vicinity of labial consonants, this sound was not as fronted and may have retained some rounding, thus being more similar if not identical to the unreduced short . The
Claudian letter Ⱶ ⱶ was possibly invented to represent this sound, but is never actually found used this way in the epigraphic record (it usually served as a replacement for the
upsilon).
Vowel nasalization {{listen|header=Examples of nasalized vowels at ends of words and before -ns-, -nf- sequences|type=speech Vowels followed by a nasal consonant were allophonically realised as long
nasal vowels in two environments: • Before word-final : When a final occurred before another nasal in the next word, however, it was pronounced as a nasal at the place of articulation of the following consonant. For instance, was written for in inscriptions, and was a
double entendre, so that the diphthongs were pronounced and in Classical Latin. They were then monophthongized to and respectively, starting in rural areas at the end of the Republican period. The process, however, does not seem to have been completed before the 3rd century AD, and some scholars say that it may have been regular by the 5th century.
Vowel and consonant length Vowel and consonant
length were more significant and more clearly defined in Latin than in modern English. Length is the duration of time that a particular sound is held before proceeding to the next sound in a word. In the modern spelling of Latin, especially in dictionaries and academic work,
macrons are frequently used to mark long vowels: , , , , and , while the
breve is sometimes used to indicate that a vowel is short: , , , , and . Long consonants were usually indicated through doubling, but ancient Latin orthography did not distinguish between the vocalic and consonantal uses of and . Vowel length was indicated only intermittently in classical sources and even then through a variety of means. Later medieval and modern usage tended to omit vowel length altogether. A short-lived convention of spelling long vowels by doubling the vowel letter is associated with the poet
Lucius Accius. Later spelling conventions marked long vowels with an
apex (a diacritic similar to an
acute accent) or, in the case of long i, by increasing the height of the letter (
long i); in the second century AD, those were given apices as well. The Classical vowel length system faded in later Latin and ceased to be phonemic in Romance, having been replaced by contrasts in vowel quality. Consonant length, however, remains contrastive in much of Italo-Romance, cf. Italian "ninth" versus "grandfather". A
minimal set showing both long and short vowels and long and short consonants is ('anus'), ('year'), ('old woman').
Table of orthography The letters , , , , , are always pronounced as in English , , , , , respectively, and they do not usually cause any difficulties. The exceptions are mentioned below: ==Syllables and stress==