← BackshareGuesssemiopen/ˌsɛmiˈoʊpən/adjectivePartly open; not fully closed or fully open.The semiopen window let in a cool breeze without letting in rain.The semiopen blinds allowed some light into the room while still providing privacy.He left the door semiopen so the cat could come in.SynonymsajarAntonymsopenclosed