The story
From cheek + -y. Compare typologically barefaced, bald-faced; Italian sfacciato (< Latin ex- + faciēs); French effronté, Italian sfrontato (< Latin ex- + frons), Polish czelny (< czoło).
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Impudent; impertinent; impertinently bold, often in a way that is regarded as endearing or amusing. Full definition →