stiff -
an ordinary man; "a lucky stiff"; "a working stiff"
stiff -
the dead body of a human being; "the cadaver was intended for dissection"; "the end of the police search was the discovery of a corpse"; "the murderer confessed that he threw the stiff in the river"; "honor comes to bless the turf that wraps their clay"
impotent lacking power or ability; "Technology without morality is barbarous; morality without technology is impotent"- Freeman J.Dyson; "felt impotent rage"
effectual,
efficacious,
effective marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough"
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"
stiff -
incapable of or resistant to bending; "a rigid strip of metal"; "a table made of rigid plastic"; "a palace guardsman stiff as a poker"; "stiff hair"; "a stiff neck"
inflexible resistant to being bent; "an inflexible iron bar"; "an inflexible knife blade";
stiff -
marked by firm determination or resolution; not shakable; "firm convictions"; "a firm mouth"; "steadfast resolve"; "a man of unbendable perseverence"; "unwavering loyalty"
resolute firm in purpose or belief; characterized by firmness and determination; "stood resolute against the enemy"; "faced with a resolute opposition"; "a resolute and unshakeable faith"
stiff -
rigidly formal; "a starchy manner"; "the letter was stiff and formal"; "his prose has a buckram quality"
formal being in accord with established forms and conventions and requirements (as e.g. of formal dress); "pay one's formal respects"; "formal dress"; "a formal ball"; "the requirement was only formal and often ignored"; "a formal education"
inebriated,
drunk,
intoxicated stupefied or excited by a chemical substance (especially alcohol); "a noisy crowd of intoxicated sailors"; "helplessly inebriated"