untrusting vs leery

untrusting and leery both are adjectives.

Word	Noun	Adjective	Verb	Adverb
untrusting	No	Yes	No	No
leery	No	Yes	No	No

As adjectives, untrusting and leery are synonyms defined as:

Other synonyms of untrusting include mistrustful, suspicious, wary.

untrusting (adjective)	leery (adjective)
openly distrustful and unwilling to confide	openly distrustful and unwilling to confide