Synonyms for helpful

modified

1. Useful

   valuable, important, significant, crucial, essential, cooperative, symbiotic, serviceable, invaluable, profitable, advantageous, favorable, convenient, suitable, practical, pragmatic, operative, effectual, efficacious, of use, usable, accessible, applicable, conducive, utilitarian, improving, bettering, of service, serendipitous, all-purpose, desirable, instrumental, contributive, good for, to one's advantage, at one's command; see also effective, necessary 1.

   Antonyms useless*, ineffective, impractical.

2. Curative

   healthy, salutary, restorative; see healthful, remedial.

3. Obliging

   accommodating, considerate, neighborly; see kind 1.