come at

verb5

1. •
   To get to, especially with effort or difficulty.

   • His precise meaning was not easy to come at.
2. •
   To attack (someone); to harass (someone); to challenge (someone) to a fight.

   • As I backed away, he came at me with a knife.
3. •
   (Australia, slang) To accept (a situation); to agree to do; to try.

   • Nah, mate – I'm not going to come at that again. Too risky.
4. •
   (no longer used) To come to; to attend.
5. •
   (no longer used) To enter into sexual relations with; to come on to (someone).