Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why

quack

verb intransitive
To cry like a duck or goose.

quack

To boast; to bounce; to talk noisily and ostentatiously; as, pretenders to medical skill quack of their cures.

quack

noun
A boaster; one who pretends to skill or knowledge which he does not possess.

quack

A boastful pretender to medical skill which he does not possess; an empiric; an ignorant practitioner.