SIL
noun informal
1A person’s sister-in-law: I think you should tell your SIL that you found her comments upsetting...
- 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...
- 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.
- in the driving (or driver's) seat
- in the end
- in the event
- in the event of ——
- in the event that
- in the extreme
- in the family way
- in the field
- in the final (or last) analysis
- in the first (or second etc.) instance
- in the first place
- in the flesh
- in the fullness of time
- in the gift of
- in the grip of
- in the gun
- in the heat of the moment
- in the heel of the hunt
- in the hole
- in the hope of
- in the interests (or interest) of something
- in the land of the living
- in the lap of luxury
- in the lap of the gods
- in the last resort