Thaana, like Arabic, is written right to left. It indicates vowels with diacritic marks derived from Arabic. Each letter must carry either a vowel or a
sukun (which indicates "no vowel"). The only exception to this rule is
nūnu which, when written without a diacritic, indicates
prenasalization of a following
stop. For a sample text, see the article on
Qaumee salaam, the Maldives' national anthem. Even though it is not part of the alphabet, the Arabic ligature for Allah (ﷲ) is used for writing names in Thaana; for example represents Abdullah, but is written as Abdu+Allah.
Consonants The letter
alifu (އ) is used for three different purposes other than acting as a normal consonant: it can act as a carrier for a vowel in the second part of a
diphthong (if there is a preceding consonant with a vowel); when it carries a
sukun, it indicates
gemination (lengthening) of the following consonant (even if the consonant is at the beginning of another word); and if
alifu+
sukun occurs at the end of a word, it indicates that the word ends in a
glottal stop. Gemination of
nasal consonants, however, is indicated by
nūnu+
sukun preceding the nasal to be geminated. Originally, each letter had the name "consonant+
a+
viyani". The suffix -
viyani originated from the word
viyana which came from
Sanskrit व्यञ्जन vyáñjana. For example,
haa was originally called
haviyani. The names of consonants which had equivalent sounds in
Arabic were changed to the Arabic names for the sounds (excepting
gaafu, which is a
Persian name).
Naviyani Naviyani (ޱ) represents the
voiced retroflex nasal "ṇ" () common to many
Indic languages. This letter was abolished from Maldivian official documents around 1953. The letter's former position in the Maldivian alphabet was the sixteenth, between Gaafu and Seenu, instead of Gnaviyani (ޏ). The former position of Gnaviyani (ޏ) was 22nd. It is still seen in reprints of old books like the
Bodu Tarutheebu, and it is used by the people of
Addu Atoll and
Fuvahmulah when writing songs or poetry in their dialects as the sound is still present in their spoken dialects.
Additional letters These additional letters () were added to the Thaana alphabet by adding a Nuqta| (dot) to existing letters, to allow for transliteration of Arabic loanwords (except for ޜ že), as previously Arabic loanwords were written using the Arabic script. Their usage is inconsistent, and becoming less frequent as the spelling changes to reflect pronunciation by Maldivians, rather than the original Arabic pronunciation, as the words get absorbed into the Maldivian language.
Vowels There are five vowel strokes or diacritical signs () for short vowels (a, i, u, e, o). The first three are derived from the Arabic
vowel signs,
fatḥah, kasrah and
ḍammah. The
ebefili looks similar to and is most likely modelled on the Urdu
baṛī ye. Long vowels (aa, ee, oo, ey and oa) are denoted by double
fili, with the exception of oa, which is a modification of the short
obofili. == Unicode ==