| noun | an ordinary man “a lucky stiff” |
| noun | the dead body of a human being “the cadaver was intended for dissection” |
| adjective | not moving or operating freely “a stiff hinge” |
| adjective | powerful “a stiff current” |
| adjective | rigidly formal “a starchy manner” |
| adjective | having a strong physiological or chemical effect; ; ; , “a potent toxin” |
| adjective | marked by firm determination or resolution; not shakable “firm convictions” |
| adjective | incapable of or resistant to bending “a rigid strip of metal” |
| adjective | very drunk |
| adverb | extremely “bored stiff” |
| adverb | in a stiff manner “his hands lay stiffly” |
| cadaverous | adjective | of or relating to a cadaver or corpse |
| cadaveric | adjective | of or relating to a cadaver or corpse |
| stiffness | noun | the physical property of being inflexible and hard to bend |
| potency | noun | capacity to produce strong physiological or chemical effects |
| firmness | noun | the trait of being resolute |
| steadfastness | noun | steadfast resolution |
| steadiness | noun | freedom from wavering or indecision; constancy of resolve or conduct |
| rigidness | noun | the physical property of being stiff and resisting bending |
| rigidity | noun | the physical property of being stiff and resisting bending |