-ive Also -ivity and -iveness.
Showing a quality or tendency.
[French -if, -ive, from Latin -ivus.]
Most examples of words in this ending are adjectives: active, attractive, consecutive, corrosive, destructive, extensive, passive, subversive, and vindictive. Some can act both as adjectives and nouns: captive, corrective, explosive, native, sedative, subjunctive. A few are nouns only: adjective, incentive, locomotive, missive. Related abstract nouns are created using either -iveness (decisiveness, furtiveness, restiveness) or -ivity (activity, captivity, festivity).