Word stem

The word friendship is made by attaching the morpheme -ship to the root word friend (which some linguists{{cite book|title=The 'language instinct' debate|author=Geoffrey Sampson|author-link=Geoffrey Sampson|author2=Paul Martin Postal|author2-link=Paul Martin Postal|year=2005|publisher=Continuum International Publishing Group|isbn=978-0-8264-7385-1|page=124|url=https://books.google.com/books?id=N0zJNPuXTZMC&pg=PA124 A stem can be a lone root, such as the verb run; a compound of roots, such as the compound nouns meatball and bottleneck; or a derivation with affixes, such as the verbs blacken and standardize. The stem of the verb to wait is wait: The stem is the word part that is common to all of its inflected variants. • wait (infinitive, imperative, present subjunctive, and present indicative except in the 3rd-person singular) • waits (third person singular of the simple present indicative) • waited (simple past) • waited (past participle) • waiting (present participle) == Citation forms and bound morphemes ==

In languages with very little inflection, such as English and Chinese, the stem is usually not distinct from the "normal" form of the word (the lemma, citation, or dictionary form). However, in other languages, word stems may rarely or never occur on their own. For example, the English verb stem run is indistinguishable from its present tense form (except in the third person singular). However, the equivalent Spanish verb stem corr- never appears as such because it is cited with the infinitive inflection (correr) and always appears in actual speech as a non-finite (infinitive or participle) or conjugated form. Such morphemes that cannot occur on their own in this way are usually referred to as bound morphemes. In computational linguistics, the term "stem" is used for the part of the word that never changes, even morphologically, when inflected, and a lemma is the base form of the word. For example, given the word "produced", its lemma (linguistics) is "produce", but the stem is "produc-" because of the inflected form "producing". == Paradigms and suppletion ==

A list of all the inflected forms of a word stem is called its inflectional paradigm. The paradigm of the adjective tall is given below, and the stem of this adjective is tall. • tall (positive); taller (comparative); tallest (superlative) Some paradigms do not make use of the same stem throughout; this phenomenon is called suppletion. An example of a suppletive paradigm is the paradigm for the adjective good: its stem changes from good to the bound morpheme bet-. • good (positive); better (comparative); best (superlative) == Oblique stem ==

Both in Latin and Greek, the declension (inflection) of some nouns uses a different stem in the oblique cases than in the nominative and vocative singular cases. Such words belong to, respectively, the so-called third declension of the Latin grammar and the so-called third declension of the Ancient Greek grammar. For example, the genitive singular is formed by adding -is (Latin) or -ος (Greek) to the oblique stem, and the genitive singular is conventionally listed in Greek and Latin dictionaries to illustrate the oblique. Examples English words derived from Latin or Greek often involve the oblique stem: adipose, altitudinal, android, and mathematics. Historically, the difference in stems arose due to sound changes in the nominative. In the Latin third declension, for example, the nominative singular suffix -s is combined with a stem-final consonant. If that consonant was c, the result was x (a mere orthographic change), while if it was g, the -s caused it to devoice, again resulting in x. If the stem-final consonant was another alveolar consonant (t, d, r), it elided before the -s. In a later era, n before the nominative ending was also lost, producing pairs like atlas, atlant- (for English Atlas, Atlantic). == See also ==