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

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

3. beyond doubt or reproach; "an unimpeachable source"

Similar words to 'unimpeachable'

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