intense

adjective5

1. •
   (of heat, pain, light or a similar quality) very strong or great
2. •
   Of a thing: possessing some characteristic to an extreme or very high or strong degree.

   • [T]h' intense atom glows / A moment, then is quenched in a most cold repose. — 1821
3. •
   Of feelings, thoughts, etc.: strongly focused; ardent, deep, earnest, passionate.

   • intense thought
4. •
   Of a person: very emotional or passionate.

   • The artist was a small, intense man with piercing blue eyes.
5. •
   Under tension; tightly drawn; strained, stressed, tense.