| useful(adjective, valuable, practical, helpful, tendency) |
| helpful(adjective, good, useful, valuable, practical) |
| subservient(adjective, useful, practical, tendency, working) |
| conducive(adjective, useful, tendency, beneficial, secondary) |
| beneficial(adjective, good, useful, valuable, practical) |
| contributory(adjective, useful, fundamental, secondary, related) |
| serviceable(adjective, good, useful, valuable, practical) |
| subsidiary(noun, adjective, good, useful, valuable) |
| advantageous(adjective, good, useful, valuable, practical) |
| effectual(adjective, useful, beneficial, advantageous, utilizable) |
| helping(adjective, tendency, influential, assisting) |
| concert(noun, adjective, music, musical, symphonic) |
| multipurpose(adjective, utilizable) |
| auxiliary(adjective, useful, secondary, influential, assisting) |
| catalytic |
| implemental |
| influential(adjective, powerful, effective) |
| significant(adjective, strong, important, powerful, useful) |
| usable(adjective, useful, practical, beneficial, working) |
| utilitarian(adjective, useful, beneficial, advantageous, utilizable) |