English Idioms and Idiomatic ExpressionsIdioms and idiomatic expressions are used frequently in spoken and written English and so this is a useful area of the language to learn. Since idioms are phrases where the words together have a meaning that is different from the dictionary definitions of the individual words, this can make idioms hard for ESL students and learners to understand. However, learning idioms can be fun and rewarding since their meanings are often surprising. Our idiom dictionary contains clear definitions and examples of 7,234 English idioms and idiomatic expressions, categorised by topic and country of origin. Members Get More!