1.   I gave up and started to walk toward the subway, muttering obscenities under my breath.

2.   The meeting escalated into a shouting match and ended with the four sophomores storming out of the room, muttering obscenities, leaving Henning and the captains behind.

3.   Thompson paused only to mutter obscenities under breath.

4.   Woods muttered an obscenity.

5.   A youth muttered an obscenity.

6.   Nigel Williams muttered an obscenity and smacked the front door on his way out.