· having strength or power greater than average or expected; "a strong radio signal"; "strong medicine"; "a strong man"

Antonym(s): weak

· not faint or feeble; "a strong odor of burning rubber"

· having or wielding force or authority; "providing the ground soldier with increasingly potent weapons"

Synonym(s): potent

· having a strong physiological or chemical effect; "a potent toxin"; "potent liquor"; "a potent cup of tea"; "a stiff drink"

Synonym(s): potent, stiff

· immune to attack; incapable of being tampered with; "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection"

Synonym(s): impregnable, inviolable, secure, unassailable, unattackable

· of good quality and condition; solidly built; "a solid foundation"; "several substantial timber buildings"

Synonym(s): solid, substantial

· of verbs not having standard (or regular) inflection; "`sing' is a strong verb"

· being distilled rather than fermented; having a high alcoholic content; "hard liquor"

Synonym(s): hard

· freshly made or left; "a warm trail"; "the scent is warm"

Synonym(s): warm

· strong and sure; "a firm grasp"; "gave a strong pull on the rope"

Synonym(s): firm