come up to something—
1. reach as high as smth.:
- So, if you’re driving through water and it comes up to your grille, it’s getting to the stage where you may stall.
2. equal smth. in standard:
- The meals cooked in most restaurants do not come up to those prepared at home.
3. (Progressive Tense) approach smth. in time:
- It is coming up to November which means Ash is about to head down the aisle and get married.
go up to something—
1. = come up to something 1:
- If the water goes up to your neck, you’re even much more slow, so the deeper the water, the heavier you are.
2. go to an important place:
- Women and children go up to town carrying buckets with fruit and river snails.
3. (UK) be allowed to move to the next higher class:
- You have to pass your end of year exam to go up to the next grade.
4. reach as far as smth.:
- The second chapter goes up to the end of the Great War; the third chapter discusses the ideological conflicts.
See also: come down to something / go down to something.