(adj) badly timed, Syn. wrong, unseasonable, untimely, Example:an ill-timed intervention; you think my intrusion unseasonable; an untimely remark; it was the wrong moment for a joke
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
a. Done, attempted, or said, at an unsuitable or unpropitious time; occurring at an inappropriate time; as, an ill-timed intervention. Syn. -- ill timed(predicate), inappropriate, unseasonable, untimely, wrong, poorly timed, badly timed. [ 1913 Webster ]