ἐγγυάω

1. to give or hand over as a pledge , Lat. spondere, and in Mid. to have a thing pledged to one, accept as a surety , (Odyssey by Homer)

2. of a father to give his daughter in marriage, to plight, betroth , (Herdotus Historicus):—;Mid. to have a woman betrothed to one , (Demosthenes Orator)

3. Mid. also to pledge oneself, give security , (Plato Philosophus), etc.: with accusative et infinitive future to promise or engage that . . , (Aristophanes Comicus)

4. with accusative rei, to answer for , (Demosthenes Orator) (ML)