let alone(redirected from leave be to avoid touching, bothering, or communicating with)
let someone or something aloneand leave someone or something alone; leave someone or something be
to avoid touching, bothering, or communicating with someone or something. Leave me alone. I don't want your help. Let it alone! Don't touch it! It may be hot!
let alone someone or something
not to mention or think of someone or something; not even to take someone or something into account. (Fixed order.) Do I have a dollar? I don't even have a dime, let alone a dollar. I didn't invite John, let alone the rest of his family.
1. See leave someone alone.
2. Not to mention, as in We have no room for another house guest, let alone an entire family. [c. 1800]
Not to mention; much less: "Their ancestors had been dirt poor and never saw royalty, let alone hung around with them" (Garrison Keillor).