Crossword Genius

The opposite of praise? Well no! (3,4)

Ross

I believe the answer is:

run down

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'the opposite of praise?' is the definition.
Although both the answer and definition are verbs in their base form, I cannot understand how one could define the other.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for run down that I've seen before include "exhaust?" , "under the weather" , "not very well" , "Indisposed" , "Songbird" .)

I've seen this clue in The Globe and Mail.
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