Out-of-date and Untimely

Out-of-date adjective - Having passed its time of use or usefulness.

Untimely and out-of-date are semantically related In some cases you can use "Untimely" instead an adjective phrase "Out-of-date".

Untimely adjective - Occurring before the usual or expected time.

Out-of-date and untimely are semantically related in inappropriate topic. Sometimes you can use "Out-of-date" instead an adjective "Untimely".