Synonyms for unimpeachable

Adjective

1. unimpeachable, unquestionable (vs. questionable)

usage: beyond doubt or reproach; "an unimpeachable source"

2. blameless, inculpable, irreproachable, unimpeachable, innocent (vs. guilty), guiltless, clean-handed

usage: free of guilt; not subject to blame; "has lived a blameless life"; "of irreproachable character"; "an unimpeachable reputation"

3. unexceptionable, unimpeachable, acceptable (vs. unacceptable)

usage: completely acceptable; not open to exception or reproach; "two unexceptionable witnesses"; "a judge's ethics should be unexceptionable"