ajar
Definitions
Slightly open.
Partially turned or swung to one side.
Examples
I left the door slightly ajar so that I could hear if the baby started crying.
The heavy wooden gate was left ajar, allowing the dog to wander into the street.
She noticed the window was ajar, letting in a cool breeze from the garden.
Synonyms
unlatched open unclosed partially open cracked gaping unfastened