stiff

1. (noun) An average person, usually male, of no particular distinction, skill, or education, often a working stiff or lucky stiff. 2. (noun) A person who is deceived, as a mark or pigeon in a swindle. 3. (noun) A cadaver; a dead person. 4. (noun) A flop; a commercial failure. 5. (noun) A person who leaves (especially a restaurant) without paying the bill. 6. (noun) (by extension) A customer who does not leave a tip. 7. (noun) Any hard hand where it is possible to exceed 21 by drawing an additional card. 8. (noun) Negotiable instruments, possibly forged. 9. (verb) To fail to pay that which one owes (implicitly or explicitly) to another, especially by departing hastily. 10. (verb) To cheat someone 11. (verb) To tip ungenerously 12. (adjective) (of an object) Rigid; hard to bend; inflexible. 13. (adjective) (of policies and rules and their application and enforcement) Inflexible; rigid. 14. (adjective) (of a person) Formal in behavior; unrelaxed. 15. (adjective) Harsh, severe. 16. (adjective) (of muscles or parts of the body) Painful as a result of excessive or unaccustomed exercise. 17. (adjective) Potent. 18. (adjective) Dead, deceased. 19. (adjective) (of a penis) Erect. 20. (adjective) (of whipping cream or egg whites) Beaten until so aerated that they stand up straight on their own. 21. (adjective) Of an equation: for which certain numerical solving methods are numerically unstable, unless the step size is taken to be extremely small. 22. (adjective) Keeping upright.