From Longman Dictionary of Contemporary Englishgradablegrad‧a‧ble /ˈɡreɪdəbəl/ adjective SLGan adjective which is gradable can be used in the comparative or superlative forms, or with words such as ‘very’ or ‘fairly’ —gradability /ˌɡreɪdəˈbɪləti/ noun [uncountable]
Examples from the Corpus
gradable• It appears that this phenomenon requires the encapsulation by a head of a gradable modifying notion. 