| beneficial(adjective, characteristic, usefulness, favour) |
| capital(adjective, characteristic, importance, principle) |
| cardinal(adjective, characteristic, importance, principle) |
| chief(adjective, characteristic, importance, principle) |
| comfortable(adjective, characteristic, usefulness, favour) |
| commodious(adjective, characteristic, usefulness, favour) |
| conducive(adjective, characteristic, usefulness, favour) |
| constitutive(adjective, characteristic, importance, principle) |
| contributive(adjective, characteristic, usefulness, favour) |
| convenient(adjective, characteristic, usefulness, favour) |
| crucial(adjective, characteristic, importance, principle) |
| decent(adjective, characteristic, usefulness, favour) |
| essential(adjective, characteristic, importance, principle) |
| fitted(adjective, characteristic, usefulness, favour) |
| foremost(adjective, characteristic, importance, principle) |
| fundamental(adjective, characteristic, importance, principle) |
| handy(adjective, characteristic, usefulness, favour) |
| helpful(adjective, characteristic, usefulness, favour) |
| imperative(adjective, characteristic, importance, principle) |
| indispensable(adjective, characteristic, importance, principle) |