go at

verb

1. to make an energetic attempt at (something)

2. to attack vehemently

Idioms and Phrases

Attack, especially with energy; also, proceed vigorously. For example, The dog went at the postman's legs, or Tom went at the woodpile, chopping away. This idiom is sometimes put as go at it, as in When the audience had settled down, the lecturer went at it with renewed vigor. [First half of 1800s]

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