| Answer | Crossword Clue |
|---|---|
| stablest | Not likely to change or fail; firmly established |
| ingrained | (of a habit, belief, or attitude) Firmly fixed or established; difficult to change |
| entrenched | (of an attitude, habit, or belief) Firmly established and difficult or unlikely to change; ingrained |
| undecidable | Not able to be firmly established or refuted |
| stablest | (of an object or structure) Not likely to give way or overturn; firmly fixed |
| unstablest | Prone to change, fail, or give way; not stable |
| unstabler | Prone to change, fail, or give way; not stable |
| unstable | Prone to change, fail, or give way; not stable |
