óspiti comes from the preposition (é)os ‘until’ and the temporal adverb póte ‘when’ (Stergellis 2017). In some areas (e.g. Pamfila, Thermi), it appears as ósputi.
E.g. am óspiti pʝa aftíɲ i ɲkutsarusíɲ s?
am éos-póte pʝa aftíni i nikocirosíni su?
‘How long is your tidiness going to last?’