I like this definition;
The adjective strange comes from Latin word extraneus, meaning “foreign†or “external.†If someone approaches you speaking with a strange accent, it means you can't identify where the person is from, not that he or she is odd or weird — the newer meaning of strange. But remember, it once was a strange sight to see a person talking on a mobile phone; when the unknown becomes known, it is no longer strange.
MallorcaOwl's post in Sheffield Wednesday: Palmer queries ‘strange’ Carvalhal appointment was marked as the answer