- -ful ► SUFFIX 1) (forming adjectives from nouns) full of; having the qualities of: sorrowful. 2) forming adjectives from adjectives or from Latin stems with little change of sense: grateful. 3) (forming adjectives from verbs) apt to; able to; accustomed to: forgetful. 4) forming nouns denoting the amount needed to fill the specified container: bucketful.
English terms dictionary. 2015.