Dictionary.com
Thesaurus.com

wartime

American  
[wawr-tahym] / ˈwɔrˌtaɪm /

noun

  1. a time times or period of war.

    Strict travel regulations apply only in wartime.

adjective

  1. caused by, characteristic of, or occurring during war.

    wartime shortages.
wartime British  
/ ˈwɔːˌtaɪm /

noun

    1. a period or time of war

    2. ( as modifier )

      wartime conditions
"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 wartime

Middle English word dating back to 1350–1400; war 1, time

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.