Old-hat and Unaccounted for

Old-hat adjective - Repeated too often; overfamiliar through overuse.

Unaccounted for and old-hat are semantically related. In some cases you can use "Unaccounted for" instead an adjective phrase "Old-hat".

Old-hat and unaccounted for are semantically related. Sometimes you can use "Old-hat" instead an adjective phrase "Unaccounted for".