Rip1  —v. (-pp-) 1 tear or cut (a thing) quickly or forcibly away or apart (ripped out the lining). 2 a make (a hole etc.) By ripping. B make a long tear or cut in. 3 come violently apart; split. 4 rush along. —n. 1 long tear or cut. 2 act of ripping.  let rip colloq. 1 (allow to) proceed or act without restraint or interference. 2 speak violently. Rip into colloq. Attack (a person) verbally. Rip off colloq. 1 swindle. 2 steal. [origin unknown]