rat race

Short definition from Wiktionary

Noun

1. 1
   An activity or situation which is congested with participants and which is hectic or tedious, especially in the context of a busy, modern urban lifestyle.
2. 2
   The busy, modern urban lifestyle itself, especially when seen as a competition for wealth or power.
3. 3
   Inconsiderate or unfair competition, where the competitors are willing to use any means to win.
4. 4
   Alternative form of rat race.

Verb

1. 1
   To rat run, that is, to drive on side streets, often at high speeds, to avoid traffic.
2. 2
   To partake or participate in a rat race, in all senses.