old

See:

an old chestnut an old flame an old hand an old head on young shoulders an old maid an old wives' tale as old as the hills at the ripe old age of something be as old as Methuselah be as old as the hills be as tough as old boots be money for old rope a chip off the old block a dirty old man

for old times' sake give someone the (old) heave ho the good old days the grand old man of something it's the same old story It's the same old story. live to a ripe old age of old of the old school the Old Bill the old country the old guard old hat Old Nick

the old school tie the old-boy network old-guard the oldest profession (in the world) the oldest trick in the book open/reopen old wounds the same old same old the same old thing settle old scores There's life in the old dog yet. up to your/its old tricks You can't teach an old dog new tricks.