Helpful etymology in English

Etymology Blog

English word helpful comes from English help, English -ful

Dictionary entry	Language	Definition
help	English (en)	(intransitive) To provide assistance.. (transitive) To avoid; to prevent; to refrain from; to restrain (oneself). Usually used in nonassertive contexts with can.. (transitive) To contribute in some way to.. (transitive) To provide assistance to (someone or something). (uncountable) Action given to provide assistance; aid.. (uncountable, euphemistic) Correction of deficits, as by [...]
-ful	English (en)	Used to form adjectives from nouns. Full of, tending to, or thoroughly possessing the quality expressed by the noun.. Used to form nouns from nouns meaning “as much as can be held by what is denoted by the noun”. Used to form nouns indicating a great deal of the quantity expressed by the noun.
helpful	English (en)	Furnishing help; giving aid; useful.

Helpful etymology