existing or occurring in a high or extreme degree

intense heat.

acute, strong, or vehement, as sensations, feelings, or emotions

intense anger.

of an extreme kind; very great, as in strength, keenness, severity, or the like

an intense gale.

having a characteristic quality in a high degree

The intense sunlight was blinding.

strenuous or earnest, as activity, exertion, diligence, or thought

an intense life.

exhibiting a high degree of some quality or action.

having or showing great strength, strong feeling, or tension, as a person, the face, or language.

susceptible to strong emotion; emotional

an intense person.

(of color) very deep

intense red.

Photography . dense ( def. 4 ) .

adjective

calm , dull , low-key , mild , moderate

adjective

acute , agonizing , all-consuming , ardent , biting , bitter , burning , close , concentrated , consuming , cutting , deep , diligent , eager , earnest , energetic , exaggerated , exceptional , excessive , exquisite , extraordinary , extreme , fanatical , fervent , fervid , fierce , forcible , full , great , hard , harsh , heightened , impassioned , intensified , intensive , keen , marked , piercing , powerful , profound , protracted , pungent , sharp , shrill , stinging , strained , strong , supreme , undue , vehement , violent , vivid , zealousnotes:emotions are intense while sustained application or attention is intensive ; intense arises from within and intensive comes from outside (it is imposed or assumed) , desperate , furious , terrible , blistering , comprehensive , consummatory , emphatic , excruciating , inspissated , passionate , rabid , severe , zealous