| Main Entry: | synchronous |
| Part of Speech: | adjective |
| Definition: | simultaneous |
| Synonyms: | coincident, contemporaneous, contemporary, synchronized |
| Main Entry: | synchronous |
| Part of Speech: | adjective |
| Definition: | occurring or existing at same time |
| Synonyms: | coexistent, concomitant, concurrent, contemporary, identical, simultaneous |
| Main Entry: | coincident |
| Part of Speech: | adjective |
| Definition: | concurring, happening together |
| Synonyms: | ancillary, attendant, attending, coinciding, collateral, concomitant, consonant, contemporaneous, contemporary, coordinate, correspondent, incident, satellite, simultaneous, synchronous |
| Main Entry: | concomitant |
| Part of Speech: | adjective |
| Definition: | contributing, accompanying |
| Synonyms: | accessory, adjuvant, agreeing, ancillary, associated with, associative, attendant, attending, belonging, coefficient, coetaneous, coeval, coexistent, coincident, coincidental, collateral, complementary, concordant, concurrent, conjoined, conjoined with, connected, contemporaneous, contemporary, coordinate, corollary, coterminous, coupled with, fellow, in tempo, in time, incident, isochronal, isochronous, joint, satellite, synchronal, synchronous, synergetic, synergistic |
| Antonyms: | accidental, chance, unrelated |
| Main Entry: | concurrent |
| Part of Speech: | adjective |
| Definition: | simultaneous |
| Synonyms: | circumstantial, coeval, coexisting, coincident, concerted, concomitant, contemporaneous, in sync, incidental, parallel, synchronal, synchronous |
| Main Entry: | contemporary |
| Part of Speech: | adjective |
| Definition: | existing, occurring at same time |
| Synonyms: | accompanying, associated, attendant, coetaneous, coeval, coexistent, coexisting, coincident, concomitant, concurrent, connected, contemporaneous, current, linked, present, related, simultaneous, synchronal, synchronic, synchronous |
| Notes: | contemporary can be predicated of persons, conditions, or events; contemporaneous is predicable only of occurrences or events |
| Antonyms: | future, past, preceding, succeeding |
| Main Entry: | simultaneous |
| Part of Speech: | adjective |
| Definition: | happening at about the same time |
| Synonyms: | accompanying, agreeing, at the same time, coetaneous, coeval, coexistent, coexisting, coincident, coinciding, concurrent, concurring, contemporaneous, contemporary, dead heat, in sync, synchronal, synchronic, synchronous, with the beat |
| Antonyms: | asynchronous, different, divided, following, preceding, separate |
| Main Entry: | coetaneous |
| Part of Speech: | adjective |
| Definition: | contemporary |
| Synonyms: | coeval, coexistent, coexisting, concomitant, contemporaneous, simultaneous, synchronic, synchronous |
| Main Entry: | coexistent |
| Part of Speech: | adjective |
| Definition: | contemporary |
| Synonyms: | coetaneous, coeval, coexisting, concomitant, contemporaneous, simultaneous, synchronic, synchronous |
| Main Entry: | contemporaneous |
| Part of Speech: | adjective |
| Definition: | contemporary |
| Synonyms: | coetaneous, coeval, coexistent, coexisting, concomitant, simultaneous, synchronic, synchronous |
