get at

1.  Touch, reach successfully, as in Mom hid the peanut butter so we couldn't get at it. [Late 1700s]
2.  Try to make understand-able; hint at or suggest. For example, I think I see what you're getting at. [Late 1800s]
3.  Discover, learn, ascertain, as in We must get at the facts of the case. [Late 1700s]
4.  Bribe or influence by improper or illegal means, as in He got at the judge, and the charges were dismissed. [Colloquial; mid-1800s]
5.  Start on, begin work on, attend to, as in "Get at your canvassing early, and drive it with all your might" (Mark Twain, letter to his publishers, 1884). [ Colloquial; late 1800s]

Definition: attain
Antonyms: lose, miss, pass

The verb has 3 meanings:

Meaning #1: reach or gain access to
  Synonym: access

Meaning #2: influence by corruption

Meaning #3: cause annoyance in; disturb, esp. by minor irritations
  Synonyms: annoy, rag, get to, bother, irritate, rile, nark, nettle, gravel, vex, chafe, devil