1 a : capable of performing or dealing with (something)
▪ She feels she is up to her role in the play. ▪ She feels up to the challenge. ▪ The patient is now up to seeing visitors. [=is now healthy enough to see visitors]
b : good enough for (something)
▪ Her performance wasn’t up to her usual standards. [=wasn’t as good as it usually is] ▪ The hotel wasn’t up to our expectations. [=wasn’t as good as we expected it to be] ▪ (Brit) My Spanish isn’t up to much. [=my Spanish is not very good]
2 : doing something especially in a way that is secret and with intentions that are bad
▪ What are they up to?
3 — used to say who is responsible for making a choice or decision
4 a — used to indicate the place or level that is reached by something
b : to or at (a specified amount, level, etc.)
▪ Estimates for repairing the car ran from $500 up to $1,000.
c : as many or as much as (a specified number or amount)
▪ Up to eight people can play the game.
5 : during the time or period before
▪ Up to this point, we have been discussing our long-term goals.