2 ms·Today I learnt: "Overseas" is also apparently an adjective! As in, "overseas trips"by kashyapc 5y agoToday I learnt: "Overseas" is also apparently an adjective! As in, "overseas trips"younohoo 5y agoGoing underground or underneath would other examples.Thorrez 5y agoUnderneath is a bit different. I don't think it's ever an adjective. It can be a preposition or an adjective.