intense

adjective

Possessing or displaying a distinctive feature to an extreme degree.

adjective

Extreme in degree, strength, or size.

adjective

Involving or showing strain or extreme effort.

adjective

Deeply felt; profound.

adjective

Having or showing strong feeling or great seriousness.

Existing in or having a high degree; strong; powerful: as, intense pain; intense activity; hence, extreme or absolute of its kind; having its characteristic qualities in a high degree.

Exhibiting a high degree of some quality or action.

Susceptible to strong emotion; emotional.

In photography, same as dense, 3.