adjective
1.
of service or assistance
helpful suggestions
Synonyms: aidant, aiding, assistive, serviceable
Related Word: beneficial, effective, profitable, salutary, usable; constructive, practical, useful
Contrasted words: timeserving, uncooperative, unreliable; impractical, ineffectual
Antonyms: unhelpful
2.
Synonyms: good 1, advantageous, benefic, beneficial, brave, favorable, favoring, propitious, toward, useful