Origin: Latin suffix -able
Unseasonable has 3 different meanings across 1 category:
not in keeping with (and usually undesirable for) the season
"a sudden unseasonable blizzard"
"unseasonable bright blue weather in November"
badly timed
"an ill-timed intervention"
"you think my intrusion unseasonable"
"an untimely remark"
"it was the wrong moment for a joke"
Not in accordance with the season.