/ ˈstreɪndʒə(r); NAmE / noun
1.
stranger (to sb) a person that you do not know :
There was a complete stranger sitting at my desk.
They got on well together although they were total strangers .
We've told our daughter not to speak to strangers.
She remained a stranger to me.
2.
stranger (to ... ) a person who is in a place that they have not been in before :
Sorry, I don't know where the bank is. I'm a stranger here myself.
He must have been a stranger to the town.
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IDIOMS
- be no / a stranger to sth
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WORD ORIGIN
late Middle English : shortening of Old French estrangier , from Latin extraneus external, strange.