Non-gradable adjectives are adjectives that cannot be expressed in degrees and so cannot be graded. They can be compared with gradable adjectives, which have different degrees and so can be graded.
‘Enormous', ‘impossible' and ‘ridiculous' are non-gradable adjectives.
In the classroom
Learners can explore non-gradable adjectives and have fun discussing things they think are absolutely disgusting, totally unbearable, utterly unbelievable, etc.