—(transitive) To require too little work from; to work insufficiently.—(intransitive, obsolete) To work or operate in secret or clandestinely.—(ambitransitive) To do less work than necessary (on).—(intransitive) To do work for inadequate payment.—(transitive) To injure by working secretly; to destroy or overthrow by clandestine measure; to undermine.—(transitive) To do similar work for a lesser price than; to undercut.