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Related to root up: Deep rooted
root something up
[for a pig] to find something in the ground by digging with its nose. The pigs will root your plants up if they get out of their pen. The pigs will root up your plants if they get out of their pen.
1. To remove something by the roots: We had to root up the tree stumps in our new yard. Let's root these weeds up before it rains.
2. To unearth or expose some cause, solution, or basis: The public health officials rooted up the cause of the pandemic. I don't know what the answer is, but I'm sure we can root it up on the Internet.