| Contingent | (adj) Conditional |
| Eventuality | (n) A possibility |
| Implausible | (adj) Unlikely |
| Inconceivable | (adj) Impossible to grasp fully |
| In vain | (adv) With out success |
| Perchance | (adv) Perhaps |
| Preposterous | (adj) Absurd |
| Proclivity | (n) An inclination |
| Prone | (adj) Likely to do |
| Theoretical | (adj) Unproven |