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afternoons

American  
[af-ter-noonz, ahf-] / ˌæf tərˈnunz, ˌɑf- /

adverb

  1. in or during any or every afternoon.

    He slept late and worked afternoons.


afternoons British  
/ ˌɑːftəˈnuːnz /

adverb

  1. informal during the afternoon, esp regularly

"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

Etymology

Origin of afternoons

1895–1900, afternoon + -s 1