(the) God

having complete power, control

(of arguments) strong and convincing

effective

(of a person, character, argument etc) convincing, believable

effective, powerful

done by, involving the use of, physical force

powerful, aggressive

having great power; large; very

forceful, powerful

(especially of drugs or alcoholic drink) strong

effective, powerful, forceful

having or producing great power

strong, effective

brave (the usual word)

brave