-pfəl adjective
Etymology: Middle English, from help + -ful
1. : of service or assistance : useful , salutary
certain ideas are not only agreeable to think about … but they are also helpful in life's practical struggles — William James
to the stomach it is pleasant, wholesome, and helpful — E.J.Banfield
2. : constructive , encouraging
a price control picture that is helpful — T.W.Arnold
• help·ful·ly -fəlē, -li adverb