Behind the times and Old-hat

Old-hat and behind the times are semantically related In some cases you can use "Old-hat" instead an adjective phrase "Behind the times".

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

Behind the times and old-hat are semantically related in gone topic. Sometimes you can use "Behind the times" instead an adjective phrase "Old-hat", if it concerns topics such as old-fashioned, antiquated. obsolete substitute