From Longman Dictionary of Contemporary Englishout of sightout of sightoutside the area that you can see Karen waved until the car was out of sight. → sight
Examples from the Corpus
out of sight• My old friend: in no time at all she was round the corner and out of sight.• I do not think it took us longer than that to get out of range and out of sight.• I was trying to burrow out of sight.• But out of sight the roots from which they grow are spreading rapidly.• First, the cost of these activities began to escalate out of sight.• Daley sat in the house, out of sight, but giving orders to the corner police station by phone.• The drip pan underneath the refrigerator is out of sight, so special effort must be made to clean it. 