| Solution | Length | |
|---|---|---|
| 3 letters | ||
| sap | 3 | |
| law | 3 | |
| 4 letters | ||
| rule | 4 | |
| sill | 4 | |
| echo | 4 | |
| seed | 4 | |
| germ | 4 | |
| ning | 4 | |
| sake | 4 | |
| seat | 4 | |
| quid | 4 | |
| soul | 4 | |
| 5 letters | ||
| score | 5 | |
| ideal | 5 | |
| cause | 5 | |
| faith | 5 | |
| tenet | 5 | |
| unity | 5 | |
| sense | 5 | |
| dogma | 5 | |
| stuff | 5 | |
| begin | 5 | |
| truth | 5 | |
| axiom | 5 | |
| maxim | 5 | |
| ethic | 5 | |
| canon | 5 | |
| power | 5 | |
| 6 letters | ||
| source | 6 | |
| origin | 6 | |
| amoral | 6 | |
| energy | 6 | |
| embryo | 6 | |
| spirit | 6 | |
| reason | 6 | |
| truism | 6 | |
| spring | 6 | |
| rubric | 6 | |
| motive | 6 | |
| belief | 6 | |
| 7 letters | ||
| faculty | 7 | |
| element | 7 | |
| radical | 7 | |
| theorem | 7 | |
| purpose | 7 | |
| precept | 7 | |
| nucleus | 7 | |
| 8 letters | ||
| amorally | 8 | |
| VOCATION | 8 | |
| standard | 8 | |
| quiddity | 8 | |
| doctrine | 8 | |
| teaching | 8 | |
| stimulus | 8 | |
| rudiment | 8 | |
| 9 letters | ||
| unethical | 9 | |
| SOUNDNESS | 9 | |
| rationale | 9 | |
| rectitude | 9 | |
| substance | 9 | |
| postulate | 9 | |
| 10 letters | ||
| SUBSTRATUM | 10 | |
| initiation | 10 | |
| REGULATION | 10 | |
| 11 letters | ||
| terra firma | 11 | |
| PROPOSITION | 11 | |
| Rock bottom | 11 | |
| 12 letters | ||
| PRESCRIPTION | 12 | |
| unscrupulous | 12 | |
| underpinning | 12 | |
| commencement | 12 | |
| substructure | 12 | |
| quintessence | 12 | |
| 14 letters | ||
| standing order | 14 | |
| understructure | 14 | |