**Leave something behind**: to leave a place without taking something with you:

  • We left in a hurry and I must have left my keys behind.

Now I need to include "home" within the idiom! I was wondering whether the sentence below is idiomatic. If no, the. how would you imply the same message in natural English?

  • I've left my wallet behind at home.

I'm asking this question because I was faced with many cases in which "behind" had been removed from the construction above. Since that was contrary to the original idiom, I always thought there should be a missing pint here that I do not know about it. That was why I decided to post a new thread here.

Please let me know about it.

1 Answer 1


You need left (somewhere) or left behind. For the second one, somewhere is optional. So:

I left my wallet behind (at home).


I left my wallet at home.

(it's not perfect tense as it's a past action.)


We left in a hurry and I must have left my keys behind (at home).


We left in a hurry and I must have left my keys at home.

So you can get away with or without "behind", but it depends on the sentence structure as to whether it's correct usage or not.

EDIT: ( ) are optional items.

  • It's unclear to me whether you intend the "(at home)" parts as optional parts of the example sentences, or descriptions of what "behind" refers to.
    – gotube
    Commented Aug 30, 2021 at 2:51
  • @gotube I edited my question. "behind" refers to some unspecified previous location.
    – user3169
    Commented Aug 30, 2021 at 5:17
  • Based on your edits, your answers including "at home" are wrong. "I left my wallet behind at home" is bad grammar.
    – gotube
    Commented Aug 31, 2021 at 1:47

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