I think that remark is insensitive.

Involuntary muscles are muscles that move without us being conscious of them.

This material is a nonconductor and does not conduct electricity.

He was late for the game and lost by default.

His team won the game by default because the opponent didn't show up.

There was discord between them.

That painting is incongruous with the room's decoration.

We should always remember the power of Kannon in difficult times.

His music skillfully uses dissonance.

He remained silent and didn't say anything.