Intense

a.
  1. Strained; tightly drawn; kept on the stretch; strict; very close or earnest; as, intense study or application; intense thought.
  2. Extreme in degree; excessive; immoderate;
    1. Ardent; fervent; as, intense heat.
    2. Keen; biting; as, intense cold.
    3. Vehement; earnest; exceedingly strong; as, intense passion or hate.
    4. Very severe; violent; as, intense pain or anguish.
    5. Deep; strong; brilliant; as, intense color or light.