adverb occurring or existing simultaneously or side by side

Synonyms and antonyms

Parallel, coexisting, and identical
Disagree, non concurrent, and divergent


During WW2 the Allies and the USSR where concurrently fighting Nazi Germany on two fronts.
During Nazi Germany's invasion of the USSR they had to concurrently fight of the cold and Red Army.
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Germany in Two-Front War and the Schlieffen-Plan I THE GREAT WAR - Week 2