synchronous

/ˈsɪŋkɹənəs/

existing or occurring at the same time

synchronous in a sentence

“The dancers moved in synchronous harmony.”

Greek sunkhronos contemporaneous from sun- together + khronos time

Related Words

ephemeral

lasting for a very short time

transient

lasting only for a short time; impermanent

fleeting

lasting for a very short time

evanescent

soon passing out of sight, memory, or existence

momentary

lasting for a very short time; brief

perpetual

never ending or changing; occurring repeatedly