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What does 'up' in 'working from the ground up' imply?
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TakaWhat does 'up' in 'working from the ground up' imply?
In a vertical direction from a lower elevation to a higher elevation.

CJ
Comments  
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The upward direction. The 'ground' is the basic, starting position. If you supply the specific sentence, we can give you the specific implication.
OK. So when we have 'X up', some are 'X up (in Y)' but some others might be 'X up (to Y)' ?

(Jim, why are you tongue-tied?)
TakaJim, why are you tongue-tied?
up is such a basic word, I was astonished you had a question about it! Maybe it's the combination with from that's the problem, though:

[from X ] [up] = (going) in an upward direction, starting at X.

Compare:

The walls were dirty from the top down.
When you pour water in a glass, it fills from the bottom up.
To get to that farm, you start on this paved road. In about a mile it becomes a gravel road, and it's all gravel from there on.

from now on; from here on

CJ
Students: We have free audio pronunciation exercises.
What about these, without 'up'? How would you interpret these?

・We are working from the ground.
・It fills from the bottom.
As non-English.
I agree with Mr. M.

CJ
Students: Are you brave enough to let our tutors analyse your pronunciation?
OK. Thanks!