letting alone

Verb

let alone (third-person singular simple present lets alone, present participle letting alone, simple past and past participle let alone)

1. (transitive) To leave alone, let be; to stop bothering.
   • I wish he would let me alone so I could get some sleep.

   Synonyms:

   leave alone

2. (colloquial, dated, transitive) To rely on (a person) to do something.
   • Oh! let him alone for that. He's the boy that can get out of a scrape.1838, Marguerite Countess of Blessington, The Works of Lady Blessington (page 223)

See all 4 meanings of let alone