Whip is a verb that means to strike something with a quick and forceful motion, often using a flexible object such as a whip. There are many synonyms for the word whip, including lash, flog, thrash, beat, hammer, pound, pummel, strike, and smack. Each of these words carries a slightly different connotation, but all share the idea of inflicting punishment or violence upon something or someone. In addition, whip can also be used as a noun to refer to a flexible object used for striking or beating, in which case synonyms include crop, switch, cane, and birch.