Толковый словарь английского языка Oxford English Reference - ful

comb. form forming: 1 adjectives from nouns, meaning: a full of (beautiful). b having the qualities of (masterful). 2 adjectives from adjectives or Latin stems with little change of sense (direful; grateful). 3 adjectives from verbs, meaning 'apt to', 'able to', 'accustomed to' (forgetful; mournful; useful). 4 nouns (pl. -fuls) meaning 'the amount needed to fill' (handful; spoonful).