-ative
Characteristic or predisposed.
[From French -atif, -ative or Latin -ativus. ]
Examples are often adjectives: appreciative, decorative, innovative, speculative, talkative, and vituperative. Others can equally well be nouns: formative, laxative, purgative, superlative. A few longer adjectives formed from nouns ending in t can lose the -at- element through a process called syncopation; for example interpretative can appear as interpretive and preventive is sometimes preferred to preventative. See also -ive.
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