[ af-ter-thawt, ahf- ]
/ ˈæf tərˌθɔt, ˈɑf- /


a later or second thought; reconsideration.
reflection after an act; an appropriate explanation, answer, expedient, or the like, conceived of too late for the occasion.
something added, as a part or feature, that was not included in the original plan or design: The vestry was added to the church as an afterthought.

Nearby words

  1. aftershow,
  2. aftersound,
  3. aftersun,
  4. aftertaste,
  5. aftertax,
  6. aftertime,
  7. aftertreatment,
  8. afterward,
  9. afterwards,
  10. afterword

Origin of afterthought

First recorded in 1655–65; after + thought1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for afterthought

British Dictionary definitions for afterthought


/ (ˈɑːftəˌθɔːt) /


a comment, reply, etc, that occurs to one after the opportunity to deliver it has passed
an addition to something already completed
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 afterthought



1660s, from after + thought.

Online Etymology Dictionary, © 2010 Douglas Harper