Definition of soup up Soup up

We found 3 definitions of soup up from 3 different sources.

What does soup up mean?

Verb
soup up - make more powerful; "he souped up the old cars"
		hop up, hot up
		modify make less severe or harsh or extreme; "please modify this letter to make it more polite"; "he modified his views on same-gender marriage"

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soup up (Verb)
To modify the engine of a motor vehicle to give a higher performance than the specifications.

soup up in sign language