a sudden wish to do or have something, especially when it is something unusual or unnecessary He was forced to pander to her every whim. We bought the house on a whim. My duties seem to change daily at the whim of the boss. the whims of fashion She hires and fires people at whim. Word Origin late 17th cent.: of unknown origin.Extra examples For years she had suffered her husband’s whims. Funding is subject to political whim. He bought the jacket on a whim, having seen it by chance in a shop window. Slaves could be bought and sold at the whim of their masters. The bird’s nest is vulnerable to the slightest whim of the weather. The child’s parents pandered to his every whim. They seem to be able to change the rules of the game at whim. He was forced to pander to her every whim. She hires and fires people at whim. We bought the house on a whim.