Uninflectables

Part of speech: noun

Definitions

1. Words or forms in a language that do not change their shape regardless of grammatical context and remain constant in their usage and meaning
2. Linguistic units that maintain a fixed form without morphological variation throughout different syntactic or semantic conditions
3. Terms that exhibit no inflectional changes, staying uniform in form across all grammatical cases, numbers, persons, or tenses

Etymology: "Uninflectables" is a plain English formation: the adjective "uninflectable," meaning incapable of inflection, plus the plural noun ending "-s." The adjective is built from the prefix "un-" (not), the verb "inflect," and the suffix "-able" (capable of being). "Inflect" comes from Latin "inflectere," "to bend inward," through the sense of altering a word's ending to show grammatical function. The noun is a grammarians' coinage in English rather than a classical term, so its history is short and traceable to modern grammatical writing.

Synonyms: invariable words, particles