| agnostic |
one who believes it is impossible to know anything about the existence or nonexistence of God or about the essential nature of things beyond the material universe. [1/4 definitions] |
| airlift |
the systematic transportation of people or supplies by air when ground routes are impossible or dangerous to use, esp. in a battle zone or during an emergency. [1/2 definitions] |
| Babel |
according to the Old Testament, a tower built by the descendants of Noah, which was to reach heaven, a plan frustrated by God, who made communication among workmen impossible by creating a confusion of languages. |
| bottomless |
impossible to reach an understanding of; unfathomable. [1/3 definitions] |
| Catch-22 |
a situation in which one is trapped between two logically contradictory rules or regulations that make successful action impossible. |
| conundrum |
a puzzle or problem with a difficult or impossible solution. [1/2 definitions] |
| cul-de-sac |
a condition in which further progress is impossible. [1/2 definitions] |
| defy |
to challenge or dare (someone) to do something very difficult or impossible. [1/3 definitions] |
| fireproof |
difficult or impossible to damage or destroy with fire. [1/2 definitions] |
| forbid |
to obstruct or make impossible. [1/4 definitions] |
| illegible |
difficult or impossible to read or decipher. |
| immeasurable |
impossible to measure; without limit. |
| impassable |
impossible to go past, through, over, or around. |
| impenetrable |
impossible to penetrate or enter; impervious. [3 definitions] |
| impossibility |
the state or quality of being impossible. [2 definitions] |
| impossibly |
in an impossible way. [1/3 definitions] |
| inaccessible |
hard or impossible to reach, approach, or attain. |
| incredible |
difficult or impossible to believe. [1/2 definitions] |
| indeterminable |
impossible to establish or measure; not ascertainable. [2 definitions] |
| indigestible |
impossible or not easy to digest or absorb. |
| indivisible |
of a number, impossible to divide exactly. [1/2 definitions] |