| in one ear and out the other |
heard, but with little or no attention paid. |
| kill two birds with one stone |
to meet two goals with one action. |
| no one |
no person; nobody. |
| one-sided |
giving only one side or position. [2 definitions] |
| one-way |
moving or allowing to move in a single direction. |
| put one through one's paces |
to cause one to show skill or ability. |
| stare one in the face |
to be clearly obvious or impending. |
| what makes one tick |
what causes one's behavior (often used as a question). |