up to

Short definition from Wiktionary

Preposition

1. 1
   Used other than figuratively or idiomatically: see up, to.
2. 2
   Capable, ready or equipped, having sufficient material preconditions for, possibly willpower (at a particular moment).
3. 3
   As much as; no more than (also with of).
4. 4
   Until.
5. 5
   Within the responsibility of, to be attributed to the sphere of influence of, having someone or something as authoritative in.
6. 6
   Doing, involved in.
7. 7
   Doing, involved in: Devising, scheming (planning something mischievous or inappropriate).
8. 8
   Considering all members of an equivalence class the same.
9. 9
   Familiar with the meaning of; able to understand.
10. 10
    Taught by; in the class of.