-ivesuffix

Forming adjectives (and nouns). Formerly also -if, -ife; < French -if, feminine -ive (= Italian, Spanish -ivo):—Latin īv-us, a suffix added to the participial stem of verbs, as in act-īvus active, pass-īvus passive, nātīv-us of inborn kind; sometimes to the present stem, as cad-īvus falling, and to nouns as tempest-īvus seasonable. Few of these words came down in Old French, e.g. naïf, naïve:—Latin nātīv-um; but the suffix is largely used in the modern Romanic languages, and in English, to adapt Latin words in -īvus, or form words on Latin analogies, with the sense ‘having a tendency to, having the nature, character, or quality of, given to (some action)’. The meaning differs from that of participial adjectives in -ing, -ant, -ent, in implying a permanent or habitual quality or tendency: cf. acting adj., active adj., attracting adj., attractive adj., coherent adj., cohesive adj., consequent adj., consecutive adj. From their derivation, the great majority of these end in -sive and -tive, and of these about one half in -ative suffix, which tends consequently to become a living suffix, as in talk-ative, etc. A few are formed immediately on the verb stem, esp. where this ends in s (c) or t, thus easily passing muster among those formed on the participial stem; such are amusive, coercive, conducive, crescive, forcive, piercive, adaptive, adoptive, denotive, humective; a few are from nouns, as massive. In costive, the -ive is not a suffix. Already in Latin many of these adjectives were used substantively; this precedent is freely followed in the modern languages and in English: e.g. adjective, captive, derivative, expletive, explosive, fugitive, indicative, incentive, invective, locomotive, missive, native, nominative, prerogative, sedative, subjunctive.In some words the final consonant of Old French -if, from -īvus, was lost in Middle English, leaving in modern English -y suffix¹: e.g. hasty, jolly, tardy.Adverbs from adjectives in -ive are formed in -ively; abstract nouns in -iveness and -ivity suffix.