marked by extreme intensity of emotions or convictions; fervid; "fierce loyalty"; "in a tearing rage"; "vehement dislike"; "violent passions"
3
powerful
having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument"
1
potent
having a strong physiological or chemical effect; "a potent toxin"; "potent liquor"; "a potent cup of tea"