If there had been any hullabaloo yet, he wouldn't have looked so unconcerned.

So he comes back through trying to look unconcerned.

She wasn't sure she'd ever seen a man look so unconcerned about himself.

The dog looked completely unconcerned, just like a good familiar would.

I crossed my arms, trying to look unconcerned by that last comment.

She walked down the room, doing her best to look unconcerned.

The older man walked in front, and tried to look unconcerned, with poor success.

I lean back on the couch, trying to look unconcerned.

They headed in, Jim doing his best to stroll and look unconcerned.

She was making a big effort to look cheerful and unconcerned.