- (intransitive, obsolete) To lose self-possession; to become ashamed. [Attested from around (1350 to 1470) until the late 16th century.]
- (transitive) To make ashamed; to embarrass; to destroy the self-possession of, as by exciting suddenly a consciousness of guilt, mistake, or inferiority; to disconcert; to discomfit. [First attested from around (1150 to 1350).]
""He was a man whom no check could abash." – Thomas Babington Macaulay."