noun-modifying (irregular)
Describes something that deviates from the norm in a noticeable way; can range from mildly different to genuinely odd. Often used for people, behavior, ideas, or situations.
See also: 変わる (かわる)
He has unusual hobbies.
He's a bit of an odd person, but very kind.
Nothing out of the ordinary happened today.
This shop sells lots of unusual things.
Has anything unusual happened recently?
奇妙 is a more literary/formal word for something bizarre or mysterious, whereas 変わった is everyday and can describe mildly quirky things too.
普通 describes something ordinary or standard, the direct opposite of 変わった, which describes something that stands out as unusual.
eccentric; unconventional; peculiar; original
Past form of the verb 変わる (to change), used as a prenominal adjective meaning 'changed' and by extension 'unusual' or 'different'.