Wary a. : Cautious of danger; carefully watching and guarding against deception, artifices, and dangers; timorously or suspiciously prudent; circumspect; scrupulous; careful.

Wary a. : Characterized by caution; guarded; careful.

Example:
What should I look for/be Wary of in looking for an apartment?

Taxonomy
Merriam-Webster Online Dictionary, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, thesaurus, Middle English, Old English, glossary, english, language, ESL, Search, adjective, Inflected, Etymology, ware, wær.

Defination from the web:
wary from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... from Middle English war, ware, from Old English wær careful, aware, wary; akin to Old High German giwar aware, attentive, Latin vereri to fear, ...