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.

My grandfather has traveled the world when he was young.

He played his trump card at the end of the argument.

This antique clock is something I inherited from my grandfather.