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sing-along

or sing·a·long

[sing-uh-lawng, -long]
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noun
  1. an informal or unrehearsed singing of songs by a group of people, usually under the direction of a leader; songfest.
  2. an occasion marked by such singing.

Origin of sing-along

First recorded in 1955–60; noun use of verb phrase sing along
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for sing along

sing along

verb (intr, adverb)
  1. to join in singing with a performer
noun sing-along
  1. such a singsong
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sing along

sing-along

1959, noun and adjective, from verbal phrase; see sing (v.) + along (adv.). Originally associated with U.S. music producer Mitch Miller (1911-2010).

Online Etymology Dictionary, © 2010 Douglas Harper