An idiom may be defined as a group of words whose meaning cannot be understood from a literal interpretation of the group of words.
Consider this question: "What color is the sky on a clear day?" (Answer: Blue.)
Idiomatic English: Answering the question is a piece of cake.
Simple English: Answering the question is easy.
Consider this question: "What is the circumference of the earth in kilometers?" (Answer: 40,075 km.)
Idiomatic English: Answering the question is a tough nut to crack.
Simple English: Answering the question is difficult.
English is an idiomatic language.
There are more than 25,000 idioms in the English language.
Native speakers of English use and understand idioms naturally and automatically.
Students of English need to become adept with using and understanding idioms to be considered fluent in English.
1) Subscribe to the daily email and receive a new idiom and quiz every day. Try to use the idioms in appropriate contexts throughout your day.
2) Take Idiom Quizzes. Choose from over 1,000 on-site Idiom Quizzes.
3) Learn idioms in context by taking Idiom Video Quizzes.
4) Search by synonyms. The idioms4you.com search function allows you to search a term (the word "difficult", for example) and find idioms that are related to that search term.
5) Take a humorous look at the Sunday Fun Idioms.