Cautelous \Cau"te*lous\, a. [F. cauteleux, LL. cautelosus. See {Cautel}.] 1. Caution; prudent; wary. [Obs.] ``Cautelous, though young.'' --Drayton. 2. Crafty; deceitful; false. [Obs.] --Shak. -- {Cau"te*lous*ly}, adv. -- {Cau"te*lous*ness}, n. [Obs.]