wary vs suspicious

wary and suspicious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
wary	No	Yes	No	No
suspicious	No	Yes	No	No

As adjectives, wary and suspicious are synonyms defined as:

Other synonyms of wary include leery, mistrustful, untrusting.

wary (adjective)	suspicious (adjective)
marked by keen caution and watchful prudence	openly distrustful and unwilling to confide
openly distrustful and unwilling to confide	not as expected