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go after someone
to investigate someone or something for possible criminal prosecution. The prosecutor went after Max first, knowing that Max was the gang leader. The police detectives went after the whole gang.
go after someone, something, or an animal
1. Lit. to pursue someone, something, or an animal. (See also go after someone.) The dogs went after the burglar. I went after the gang that took my wallet.
2. Fig. to charge or attack someone or an animal. The bear went after the hunters and scared them off. Then the bear went after the hunting dogs and killed two.
go after somebody/something
1. to try to get or obtain someone or something There are a lot of people going after a piece of the budget, and some of them won't get any funding. I know I'll never fall into the trap of going after the big bucks.
2. to attack or try to hurt someone or something The candidate went after his opponent in a very personal way.
Pursue, try to get, as in The officer went after the burglar; or Ed was going after a new job with a vengeance. [Mid-1400s]
1. To depart later than some specific time: Don't go after 7:00, because the store will be closed.
2. To perform an activity after someone else: Since we have only one shower, I go after my brother, and my sister goes after me.
3. To chase or pursue someone or something: The dogs went after the cats down the alley.