Strained; tightly drawn; kept on the stretch; strict; very close or earnest; as, intense study or application; intense thought.
- Possessing or displaying a distinctive feature to an extreme degree: the intense sun of the tropics.
- Extreme in degree, strength, or size: intense heat.
- Involving or showing strain or extreme effort: intense concentration.
- Deeply felt; profound: intense emotion.
- Tending to feel deeply: an intense writer.