Word familyadjectivefourfoldfourscorefourscorthfour-squarenounfourfoldnessfoursomefourballfour-by-fourfour-leaf cloverfour-letter wordfourpencefourpennyfour-wheel drivefour
ˌfour-letter ˈword noun [countableC]
SWEARa word that is considered very rude and offensive, especially one relating to sex or body waste (四字母)脏词,粗俗下流的词SYN swearword
Examples from the Corpus
four-letter word• "Diet" has become a four-letter word in the commercial weight-loss business; now they're called "foodplans."• The best four-letter word in the world.• No four-letter words, please - this is a family show.