Custom Search   [ Correct English | Common Errors |  | Sample Letters | Glossary of Correct Usage | Common Sentences | Q & A ] [ English Compositions | High School Vocab | Words | Phrases | Celebrity | Poetry Corner | SPM essays ] [ Literary English | Word Differentiation ] Sponsored Links American  idioms Next>>     TOEFL Vocabulary English Conversation English Grammar American Idioms English Comprehension English Summary English News Movie Reviews   Definition something that occurs very rarely Examples 1) The rise of China as a superpower happens once in a blue moon in human history. 2) Once in a blue moon, I stumble upon a hidden gem while exploring the city. Etymology The phrase originated from a misinterpretation of the term "blue moon," referring to third full moon in a season, and symbolizes something that occurs very infrequently. Synonyms rare, unusual     A bed of roses   A bird of a different feather   A bundle of laughs   A chip on one's shoulder   A closed book   A dime a dozen   A flight of fancy   A piece of cake   A Piece of Work   A shot in the dark   Add up to a can of beans   Age before beauty   Ahead of the curve   All eyes   All thumbs   An eagle eye   Answering one's calling   As good as gold   Ask for her hand   At great length   At the drop of a hat   At the end of the rope   Back to the salt mines   Bad apple   Be there or be square   Bear sb a grudge   Bear fruit   Beard the lion Beat around the bush   Beat oneself up   Beat the odds   Beg the question   Below the belt   Bend over backward   Best of both worlds   Beyond the pale   Bite my head off   Bite the dust   Blind spot   Bob's your uncle   Bore the pants off   Born and bred   Bosom friend   Bread and butter   Break it down for you   Bring home the bacon   Bring out the big guns   Bring someone to heel   Burn someone up   Bursting at the seams    Bust one's back   Butter both sides of the bread   Butterflies in the stomach   Idioms01.html Idioms02.html Idioms03.html Idioms04.html Sponsored Links     American Slang English Proverbs English Exercises Common English mistakes Ancient Chinese stories Junior English essays High school English essays Lower Secondary English essays