The Collaborative International Dictionary of English v.0.48:
Wary \Wa"ry\, a. [Compar. Warier; superl. Wariest.] [OE.
war, AS. w[ae]r; akin to Icel. v?rr, Dan. & Sw. var, Goth.
wars, G. gewahr aware, OHG. wara notice, attention, Gr. ? to
see. Cf. Aware, Garment, Garnish, Garrison,
Panorama, Ward, v. t. Ware, a., Warren.]
1. Cautious of danger; carefully watching and guarding
against deception, artifices, and dangers; timorously or
suspiciously prudent; circumspect; scrupulous; careful.
"Bear a wary eye." --Shak.
We should be wary, therefore, what persecution we
raise against the living labors of public men.
2. Characterized by caution; guarded; careful.
It behoveth our words to be wary and few. --Hooker.
Syn: Cautious; circumspect; watchful. See Cautious.