1. Sagacious in adapting means to ends; circumspect in action, or in determining any line of conduct; practically wise; judicious; careful; discreet; sensible; opposed to rash; as, a prudent man; dictated or directed by prudence or wise forethought; evincing prudence; as, prudent behavior. Moses established a grave and prudent law. (milton)
2. Frugal; economical; not extravagant; as, a prudent woman; prudent expenditure of money.
Synonym: Cautious, wary, circumspect, considerate, discreet, judicious, provident, economical, frugal.
Origin: L. Prudens, -entis, contr. From providens: cf. F. Prudent. See Provident.