Webster's Revised Unabridged Dictionary · 1913

Abash

Abash (ȧ*bash") , transitive verb

[Old English abaissen, abaisshen, abashen, Old French esbahir, French ébahir, to astonish, from Latin ex + the interjection bah, expressing astonishment. In Old English somewhat confused with abase. Compare Finish.]

To destroy the self-possession of; to confuse or confound, as by exciting suddenly a consciousness of guilt, mistake, or inferiority; to put to shame; to disconcert; to discomfit.
Abashed, the devil stood, And felt how awful goodness is. — Milton
He was a man whom no check could abash. — Macaulay
Satan stood Awhile as mute, confounded what to say. — Milton