| nitty-gritty(noun, facts, details, essentials, fundamentals) |
| axiom(noun, support, action, base, beginning) |
| postulate(noun, support, action, base, beginning) |
| action(noun, support, base, beginning, source) |
| antecedent(noun, support, action, base, beginning) |
| assumption(noun, support, action, base, beginning) |
| authority(noun, support, action, base, beginning) |
| backbone(noun, support, action, base, beginning) |
| background(noun, support, action, base, beginning) |
| backing(noun, support, action, base, beginning) |
| base(noun, support, action, beginning, source) |
| basic facts(noun, expression, substance, heart, soul) |
| basics(noun, substance, heart, soul, focus) |
| basis(noun, action, base, beginning, source) |
| bedrock(noun, support, action, base, beginning) |
| bottom line(noun, expression, substance, heart, soul) |
| brass tacks(noun, expression, substance, heart, soul) |
| case |
| cause(noun, support, action, base, beginning) |
| center(noun, support, action, base, beginning) |