(informal) A silly or foolish person.

plural of ninny

(slang, derogatory) A person who is unrealistically optimistic, or a Pollyanna, and who might seem to prefer to retreat from difficult situations by professing seemingly irrelevant platitudes, rather than engaging meaningfully with the difficulty at hand.

plural of bliss ninny

predisposition to act like a ninny

a foolish person; a simpleton

plural of ninnyism

plural of ninnyhammer

silly; foolish