Pronunciation change

Abbreviation change

Abbreviation
rad

  1. (geometry) Short for "radian".
  2. (slang) Short for "radical".
  3. (motor trade slang) Short for "radiator".

Adjective change

Positive
rad

Comparative
radder

Superlative
raddest

  1. (slang) Cool, short for "radical".
    That outfit is so rad!