intensifier

Noun

intensifier (plural intensifiers)

1. That which intensifies.
2. A word or particle that heightens the intensity of meaning of a term.
   • “Plus-” and “doubleplus-” are both intensifiers that replace words of different extremities, and the words very and extremely respectively. So words like great, excellent and horrible are rendered redundant in Newspeak, replaced by “plusgood”, “doubleplusgood” and “doubleplusungood” respectively....2020 August 8, Zui, “Controlled Languages — Newspeak”, in The Language Closet

   Synonyms:

   expletive, intensive

   Antonyms:

   downtoner

3. A chemical agent used to intensify the lights or shadows of a photograph.