rigid or firm; difficult or impossible to bend or flex

a stiff collar.

not moving or working easily

The motor was a little stiff from the cold weather.

(of a person or animal) not supple; moving with difficulty, as from cold, age, exhaustion, or injury.

strong; forceful; powerful

stiff winds; The fighter threw a stiff right to his opponent's jaw.

strong or potent to the taste or system, as a beverage or medicine

He was cold and wanted a good stiff drink.

resolute; firm in purpose; unyielding; stubborn.

stubbornly continued

a stiff battle.

firm against any tendency to decrease, as stock-market prices.

rigidly formal; cold and unfriendly, as people, manners, or proceedings.

lacking ease and grace; awkward

a stiff style of writing.

excessively regular or formal, as a design; not graceful in form or arrangement.

laborious or difficult, as a task.

severe or harsh, as a penalty or demand.

excessive; unusually high or great:

firm from tension; taut

to keep a stiff rein.

relatively firm in consistency, as semisolid matter; thick

a stiff jelly; a stiff batter.

dense or compact; not friable

stiff soil.

Nautical . (of a vessel) having a high resistance to rolling; stable ( opposed to crank ).

Scot. and North England . sturdy, stout, or strongly built.

Australian Slang . out of luck; unfortunate.

Slang .

a dead body; corpse.

a formal or priggish person.

a poor tipper; tightwad.

a drunk.

Slang .

a fellow

lucky stiff; poor stiff.

a tramp; hobo.

a laborer.

Slang .

a forged check.

a promissory note or bill of exchange.

a letter or note, esp. if secret or smuggled.

Slang . a contestant, esp. a racehorse, sure to lose.

in or to a firm or rigid state

The wet shirt was frozen stiff.

completely, intensely, or extremely

I'm bored stiff by these lectures. We're scared stiff.

Slang . to fail or refuse to tip (a waiter, porter, etc.).

Slang . to cheat; gyp; do out of

The company stiffed me out of a week's pay.