at_the_same_time
1. [ adverb ] at the same instant
Synonyms: simultaneously
Examples:

"they spoke simultaneously"

Related terms: coincident coincident
2. [ adverb ] overlapping in duration
Synonyms: concurrently
Examples:

"concurrently with the conference an exhibition of things associated with Rutherford was held" "going to school and holding a job at the same time"

Related terms: coincident coincident
3. [ adjective ] occurring or operating at the same time
Synonyms: simultaneous concurrent cooccurring coincidental coinciding coincident
Examples:

"a series of coincident events"

Related terms: synchronous