Definition of SIL in English:

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SIL

noun

informal
1A person’s sister-in-law: I think you should tell your SIL that you found her comments upsetting
More example sentences
  • My nephew has more toys, books and clothes than he needs, and my SIL can find them at better prices than I can anyway.
  • I was quite appalled at the treatment my SIL received when she had a baby.
  • When my nephew was born, my SIL's group of close-knit friends referred to themselves as "aunties" to him.
2A person’s son-in-law: my SIL lives in the UK with our DD and their son
More example sentences
  • I know she wouldn't dream of saying the same things to her DD and SIL. It's always directed at me.
  • Still wish my DD had found herself a wonderful man and SIL for me.
  • My SiL is in full-time employment and is back living with his mother.

Origin

1960s: abbreviation.

For editors and proofreaders

Syllabification: SIL

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