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| remain on edge (As we approach the fifth anniversary of the unsolved grizzly murder of a mother of two, people who use the trail system of Pacific Spirit Park remain on edge. ART Vancouver); on one's toes | |||
| be on one's toes (Having two kids under age five sure keeps me on my toes!); keep nose to the ground (Himera) | |||
| stay focused (Damirules); stay alert (быть начеку Damirules) | |||
| не расслабляться: 3 phrases in 3 subjects |
| American usage, not spelling | 1 |
| Informal | 1 |
| Makarov | 1 |