S: (v) prove, demonstrate, establish, show, shew (establish the validity of something, as by an example, explanation or experiment) "The experiment demonstrated the instability of the compound"; "The mathematician showed the validity of the conjecture"
S: (v) see, check, insure, see to it, ensure, control, ascertain, assure (be careful or certain to do something; make certain of something) "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product"
S: (v) card (ask someone for identification to determine whether he or she is old enough to consume liquor) "I was carded when I tried to buy a beer!"
S: (v) spot-check (pick out random samples for examination in order to ensure high quality)
S: (v) cover (maintain a check on; especially by patrolling) "The second officer covered the top floor"
S: (v) check (verify by consulting a source or authority) "check the spelling of this word"; "check your facts"
S: (v) prove, demonstrate, establish, show, shew (establish the validity of something, as by an example, explanation or experiment) "The experiment demonstrated the instability of the compound"; "The mathematician showed the validity of the conjecture"
S: (v) prove oneself (show one's ability or courage)
S: (v) prove (prove formally; demonstrate by a mathematical, formal proof)