One of the mysteries of the English language finally explained.
betray, be disloyal to, be unfaithful to, desert, break one's promise to, double-cross, break faith with, sell out, play false, inform against, inform on
informal tell on, sell down the river, blow the whistle on, squeal on, stitch up, peach on, do the dirty on
British informal grass on, shop
North American informal rat out, finger, drop a dime on, drop the dime on
Australian informal pimp on, pool, put someone's pot on
In this article we explore how to impress employers with a spot-on CV.