Intensive

Part of speech: noun (n.)

That which intensifies or emphasizes; an intensive verb or word.

Part of speech: adjective (a.)

1. Stretched; admitting of intension, or increase of degree; that can be intensified. Sir M. Hale.

2. Characterized by persistence; intent; unremitted; assiduous; intense. [Obs.] Sir H. Wotton.

3. Serving to give force or emphasis; as, an intensive verb or preposition.