Adjective
Intense and active.
Fierce; cruel and aggressive.
Continual or successive; unceasing.
Tending to incite or inflame; incensive.
Insightful; deep and succinct; incisive.
Critical and accurate; incisive.
(biology) Intruding inward.
Included.
(grammar) Synonym of inessive
(grammar) Durative.
Source: en.wiktionary.org