A gradable adverb can make a gradable adjective stronger or weaker.
Examples:
- very
- completely
- fairly
- quite
- slightly
- a bit
- It had been a fairly quiet day so far.
(adverb/fairly – adjective/quiet) - He thought that it was a bit strange she hadn’t phoned.
(adverb/a bit – adjective/strange)
Compare with non-gradable adverbs.