Antonyms of adj coetaneous

1 sense of coetaneous

Sense 1
coetaneous, coeval, contemporaneous -- (of the same period)

INDIRECT (VIA synchronous) -> asynchronous -- (not synchronous; not occurring or existing at the same time or having the same period or phase)

Similarity of adj coetaneous

1 sense of coetaneous

Sense 1
coetaneous, coeval, contemporaneous -- (of the same period)
       => synchronous (vs. asynchronous), synchronal, synchronic -- (occurring or existing at the same time or having the same period or phase; "recovery was synchronous with therapy"- Jour.A.M.A.; "a synchronous set of clocks"; "the synchronous action of a bird's wings in flight"; "synchronous oscillations")