| Sec |
| Flash |
| Instant |
| Brief sec |
| Short time |
| Brief moment |
| Quick moment |
| Quick second |
| Brief second? |
| No time at all |
| Blink of an eye |
| Very short time |
| Brief time period |
| Be there in a ___ |
| Moment, informally |
| Two shakes, with "a |
| Brief period, briefly |
| Short time, informally |
| Very short time, in slang |
| Blink of an eye, for short |