Synonyms for coincident:
conterminous, attending, contemporary.
Other synonyms and related words:
coexisting, modern, synchronic, common, coinciding, contemporary, attending, coextensive, coetaneous, coincidental, synchronal, coexistent, coterminous, cooccurring, conterminous, synonymous.
concert, synergistic, concurrent, cooperative, combined, co-active, united, synchronous.
concurring, happening together (adjective)
ancillary, contemporary, simultaneous, contemporaneous, attending, concomitant, synchronous, attendant, coinciding.
akin, blood, auxiliary, related, supplemental, connected, relevant, consanguine, correlative, kindred, analogous, pertinent, affiliated, ancillary, adjunct, associated, dependent, concomitant, attendant, germane.
coeval, concurrent, simultaneous, concomitant, accompanying, contemporaneous, at the same time, synchronous.
congruous, solid, atomic, congruent, same, pure, simple, cohesive, elemental, united, single, coherent, complete, homogeneous, uniform, undivided, integrated, indivisible, monolithic, intact, holistic, irreducible, entire, integral, fundamental, unified.
Sense 2 (noun)
Sense 3 (noun)
coinciding, cooccurring, concurrent, congruent, synchronal, at the same time, synchronic, simultaneous, synchronous, coincidental.