Strange, odd, or peculiar — something that seems unusual or off.
彼の様子が最近ちょっと変だ。
His behavior has been a bit strange lately.
そんなことを言うなんて、変な人だ。
Saying something like that — what a strange person.
その映画は設定が変で、よく覚えている。
That movie's premise was odd; I remember it well.
Unexpected; surprising or out of the ordinary.
変なことに、会議は突然中止になった。
Strangely, the meeting was suddenly canceled.
変な話だが、彼の電話番号が変わっていた。
It's a strange story, but his phone number had changed.
Change or alteration (noun usage; somewhat literary or old-fashioned).
会社に大きな変が起こった。
A big change occurred at the company.
その土地は昔から変が多いと言われる。
That place has long been said to have many changes/incidents.
An incident, disturbance, disaster, or emergency (noun; literary/older usage).
山で変があり、村人たちは避難した。
There was an incident in the mountains, and the villagers evacuated.
In music notation, a prefix indicating 'flat' (♭), used in key names (e.g., 変ロ短調).
この曲は変ロ短調で書かれている。
This piece is written in B-flat minor.