| The organist often crackled or whined the Gregorian-chant hymns and the celebrant often hummed, mumbled, or whispered the Latin prayers. |
| He was humming the song aloud and loudly, louder in fact than any man would have hummed it had he expected to bump into another human being. |
| I started to sprinkle the pudding with some jellied candies, and happily hummed a song as I went about doing it. |
| Rue fumed silently as he hummed contentedly and she watched him closely, studying his movements and actions. |
| The engine hummed to itself sweetly as she slid the unmarked patrol car into the flow of traffic, handling the vehicle with her usual style. |
| The river itself hummed with natural energy, crystal clear water darkening to a thick indigo to show its depth. |
