suped-up

Adjective

souped-up (comparative more souped-up, superlative most souped-up)

1. (cant) Of a racehorse: injected with a substance to make it run faster or to change its temperament.
2. (slang) Of an engine, a motor vehicle, etc.: modified for higher performance.
   • $600.00 BUYS T. M. Scout with "Souped up" OX5 motor. Snappiest commercial single seater built. H. W. Mackie, Air Service, Houston, Texas.1925 September, “Classified Advertisements”, in H[enry] H[aven] Windsor, editor, Popular Mechanics Magazine, volume 44, number 3, Chicago, Ill.: Popular Mechanics Co., →OCLC, page 33, column 3

   Synonyms:

   hopped up

3. (broadly) Improved.
   • As with the previous Omicron subvariants, it seems likely that the US will follow those regions once again, with or without the new souped-up vaccines.2022 July 20, “Opinion: Covid-19 continues to surprise us”, in CNN
4. (US, slang) Intoxicated by alcohol or drugs.
   • If you have had any experience at all with the effect that it has upon these people when they are in situations of violence, you can understand that you cannot send these persons who are souped up on drugs to perform a delicate mission […]1968, Melvin M. Belli, Trial and Tort Trends: Belli Seminar, page 253

   Synonyms:

   juiced

5. (New-England, US, slang) Excited.

   Synonyms:

   juiced