Use the word "old" when talking about the age of a person or a thing:

  • He’s ten years old.
  • He’s a ten-year-old boy. (Notice the use of hyphens!)
  • That building is 100 years old.
  • It’s a hundred-year-old building.
  • Wendy and Kevin’s baby is just a few weeks old.
  • At the age of 16, a young person is old enough to drive.

The word "old" is also used as the opposite of young or new.

  • That bread is old. Throw it out.
  • My car is so old. It’s time to think about buying something to replace it.
  • Rob is 67, but he doesn’t feel old.
  • Sara is 18 and too old to play with dolls.
  • The old man who lives next door is moving to an assisted living facility.
  • Mathilda feels like an old fogy at work because everyone is twenty years younger than she is. (old fogy = an old person)

You can use "old" to describe a previous relationship or location.

  • I went out with some old friends from college last night. (old friends = people whom you have known for a long time, but they might not be "old.")
  • Bob got a recommendation from his old boss. (old boss = previous boss)
  • Ellen is still in love with her old boyfriend. (old boyfriend = previous boyfriend)
  • This is where our old school was located. Now it’s gone and replaced by an apartment building.
  • Svetlana and Sergei live in the U.S. but they’ve kept their daily habits as they were in the old country. (old country = the place they come from)

The word "old" appears in some expressions and slang:

  • Out with the old, in with the new. (It’s time for something new.)
  • This daily commute is getting old. (I’m tired of this.)
  • Those were the good old days. (a good time in the past)
  • They’re part of the old boy network. (old boy network = a group of men who are in charge of things)
  • Jose borrowed a car from his old man. (old man = father)
  • Alex is taking his old lady out to dinner tonight. (old lady = girlfriend or wife)

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October 14, 2015