Antonyms of adj contemporaneous

2 senses of contemporaneous

Sense 1
contemporaneous, contemporary -- (occurring in the same period of time; "a rise in interest rates is often contemporaneous with an increase in inflation"; "the composer Salieri was contemporary with Mozart")

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

Sense 2
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 contemporaneous

2 senses of contemporaneous

Sense 1
contemporaneous, contemporary -- (occurring in the same period of time; "a rise in interest rates is often contemporaneous with an increase in inflation"; "the composer Salieri was contemporary with Mozart")
       => 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")

Sense 2
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")