flabbergast
Cross references: 1. surprise flab.ber.gast \'flab-*r-.gast\ vt [origin unknown] : to overwhelm with shock, surprise, or wonder : ASTOUND
Cross references: 1. surprise flab.ber.gast \'flab-*r-.gast\ vt [origin unknown] : to overwhelm with shock, surprise, or wonder : ASTOUND