Related Clues:

• Sketchy
• Open a pot of jam?
• Open-ish, as a door
• Just a little cracked
• Almost closed, doorwise
• Left open
• Not merely unlocked
• Admitting the draught, perhaps, is a bit of a shock
• Part-open
• Like a door facilitating eavesdropping, say
• Unlatched, say
• Open a smidge
• Admitting a draft, as a door
• What you might have in a pub that's just opened
• Not quite closed, doorwise