To mingle confusedly together; mix indiscriminately, so that individuals, parts, or elements cannot be distinguished; throw into disorder; confuse.To treat or regard erroneously as identical: mix or associate by mistake.To throw into confusion; perplex with sudden disturbance, terror, or surprise; stupefy with amazement.To destroy; bring to naught; overthrow; ruin; spoil.Hence such interjectional phrases as confound it! confound the fellow! which are relics of the fuller imprecations, God confound it! God confound the fellow ! etc.To waste or spend uselessly, as time.Synonyms See list under confuse. Confuse, etc. See abash.