Out of sight, out of mind.

Другие идиомы:

• out of hand
• out of season
• mind one's own business
• out on bail
• out of place
• out of turn
• have a mind of its own
• make up one's mind
• out of town
• out-of-date
• something-minded
• mind is in the gutter
• out of reach
• know one's own mind
• out of order