What is the meaning of -iv?

-ive; making an adjective

-ive

Suffix appended to verb roots to create an adjective denoting the capability or suitability to have the corresponding action done to a subject; -able, -ible

Suffix appended to noun or verb roots to create an adjective denoting that the subject exhibits the corresponding quality or is capable of performing the corresponding action; -ous, -ive

-ive; making an adjective

Source: wiktionary.org