UNSEASON'ABLE, adjective unsee'znable.
1. Not seasonable; not being in the proper season or time. he called at an unseasonable hour.
2. Not suited to the time or occasion; unfit; untimely; ill timed; as unseasonable advice; an unseasonable digression.
3. Late; being beyond the usual time. He came home at an unseasonable time of night.
4. Not agreeable to the time of the year; as an unseasonable frost. The frosts of 1816, in June, July and August, in New England, were considered unseasonable as they were unusual.