| bedrock |
| best(adjective, essential, fundamental, supreme) |
| built-in(adjective, characteristic, natural, essential, fundamental) |
| center(noun, adjective, important, significant, emotion) |
| component(noun, adjective, law, drop, part) |
| compulsory(adjective, significant, essential, vital, fundamental) |
| crisp(adjective, severe) |
| decisive(adjective, important, significant, essential, critical) |
| desideratum(noun, want, essential, requirement, necessity) |
| direct(adjective, top, plain, innocent, meek) |
| dominant(adjective, top, important, significant, essential) |
| dry(adjective, simple, severe, pure, unadorned) |
| economy |
| embryonic(simple, beginning, opening, original, fundamental) |
| engrained |
| foremost(adjective, top, important, significant, original) |
| germinal(beginning, opening, original, first, primary) |
| hard(adjective, severe, rough, cold, coarse) |
| harsh(adjective, severe) |
| heart(noun, law, part, condition, emotion) |