not easily bent; not flexible or pliant; not limber or flaccid; rigid; firm; as, stiff wood, paper, joints.-not liquid or fluid; thick and tenacious; inspissated; neither soft nor hard; as, the paste is stiff.-firm; strong; violent; difficult to oppose; as, a stiff gale or breeze.-not easily subdued; unyielding; stubborn; obstinate; pertinacious; as, a stiff adversary.-not natural and easy; formal; constrained; affected; starched; as, stiff behavior; a stiff style.-harsh; disagreeable; severe; hard to bear.-bearing a press of canvas without careening much; as, a stiff vessel; -- opposed to crank.-very large, strong, or costly; powerful; as, a stiff charge; a stiff price.