concurrent

1 existing or occurring at the same period of time concurrent expeditions to the Antarctic that were in a race to reach the South Pole Synonyms coetaneous, coeval, coexistent, coexisting, coextensive, coincident, coincidental, contemporary, contemporaneous, coterminous, simultaneous, synchronic, synchronousRelated Words accompanying, attendant, attending, concomitant, incidentAntonyms asynchronous, noncontemporary, nonsimultaneous, nonsynchronous

2 present at the same time and place the postwar period of prosperity and the concurrent baby boom are the major topics in this history of the 1950s Synonyms accompanying, attendant, attending, coexistent, coexisting, coincidental, concomitant, coincidentRelated Words contemporaneous, contemporary, simultaneous, synchronous; associated, collateral, connected, linked, related; consequent, resultant, resulting; ensuing, following, subsequent; accidental, casual, chance, fluky (also flukey), fortuitous, freak, incident, incidentalNear Antonyms unassociated, unconnected, unrelated