An ELT Glossary : Gradable and Ungradable Antonyms


  • A gradable antonym is a type of "opposite" adjective or adverb where the words are on a scale with others before, after and/or in between  and "extreme" antonyms beyond. 
  • Examples : On the scale of eg : freezing - cold -chilly - cool - warm - hot - boiling, the gradable adjectives are cold - chilly - cool - warm - hot while freezing and boiling are the extremes.
  • Negating a gradable/ungradable adjective or adverb does not necessarily mean its opposite - eg "not hot" isn't necessarily "cold"; "not loudly" doesn't necessarily mean "softly". (Compare this against other types of antonym - eg dead/alive where negation does imply the opposite term.)
  • Gradable adjectives/adverbs can be used in the comparative and superlative, whilst the extreme adjectives/adverbs cannot and can therefore be considered "ungradable" (or non-gradable):
           Gradable : I think it's hotter today than yesterday   but not ...
           Ungradable :   *I think it's more boiling today than yesterday.
  • Gradable adjectives/adverbs can be intensified by adverbs such as  extremely, a bit, quite (which indicate intermediate degrees) but not by eg totally, completely, absolutely (which indicate ultimate degree). The extreme adjectives/adverbs at the end of the scale are the opposite and, again, for this reason they can be considered "ungradable"  :
        Gradable :  It was very cold    but not   *It was absolutely cold
        Extreme : It was absolutely freezing    but not    *It was very freezing


Further reading

Longman Advanced Learners’ Grammar (Foley & Hall) Unit 23
British Council, Learn English, Adjectives: Gradable and Non-Gradable 

s