adjective
not to be depended on or trusted
an unsafe investment
Synonyms: unassured, undependable, unreliable, untrustworthy
Related Word: insecure, shaky, tottery, unsound, unstable; chancy, hazardous, risky; dangerous, jeopardous, perilous; erratic, uncertain
Contrasted words: dependable, trustworthy; secure, sound, stable, substantial
Antonyms: safe