| sine qua non(noun, expression, idiom, law, foundation) |
| sneaking suspicion(expression, theory, guesstimate, premise) |
| stab in the dark(expression, idiom, theory, guesstimate, premise) |
| statement(noun, belief, proposition, formula) |
| stipulation(tenet, axiom) |
| supposal(theory, guesstimate, premise) |
| supposition(theory, guesstimate, premise) |
| surmisal(theory, guesstimate, premise) |
| tentative law(expression, theory, guesstimate, premise) |
| theorization(theory, guesstimate, premise) |
| theory(noun, rule, belief, standard, notion) |
| thesis(noun, belief, theory, proposition, guesstimate) |
| undercarriage(fundamental, shorts) |
| universal law(expression, fundamental, shorts, undercarriage) |
| universal truth(expression, theory, guesstimate, premise) |
| unwritten rule(expression, fundamental, shorts, undercarriage) |
| verity(noun, law, rule, notion, fundamental) |
| vital part(expression, fundamental, shorts, undercarriage) |