intense

adj.

[1]	extreme , excessive , severe , strong , great , fierce , harsh , acute , powerful , profound , deep
[2]	eager , acute , enthusiastic , keen , earnest , sincere , heartfelt , deep , passionate , impassioned , ardent , zealous , animated , burning , consuming , fervent , fervid , perfervid , vehement , frantic , fanatical , frenzied
[3]	highly-strung/(Mainly US) high-strung , vivid , emotional , temperamental , tense , touchy , testy , volatile , hysterical , hotheaded , feverish , nervous , (high-)spirited , impetuous , impulsive , (Colloq) uptight