ill-timed, unseasonable, untimely, wrong -- (badly timed; "an ill-timed intervention"; "you think my intrusion unseasonable"; "an untimely remark"; "it was the wrong moment for a joke")
premature, untimely -- (uncommonly early or before the expected time; "illness led to his premature death"; "alcohol brought him to an untimely end")
Overview of adv untimely
The adv untimely has 1 sense
prematurely, untimely -- (too soon; in a premature manner; "I spoke prematurely")