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In some senses, rat-race is marked as slang, idiomatic. Watch for register when choosing this word.
rat-race
verb 2noun 1
Definitions
verb
1
To rat run, that is, to drive on side streets, often at high speeds, to avoid traffic.
2
To partake or participate in a rat race, in all senses.
noun
1
Alternative form of rat race.
Their own private life gets to be a rat-race.
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