| ADJECTIVE | all | unseeable, invisible | impossible or nearly impossible to see |
|---|
| Meaning | impossible or nearly impossible to see; imperceptible by the eye. | |
|---|---|---|
| Synonym | invisible | |
| Narrower | camouflaged | made invisible by means of protective coloring |
| concealed, hidden, out of sight | not accessible to view | |
| infrared | Having or employing wavelengths longer than light but shorter than radio waves | |
| lightless | Giving no light | |
| nonvisual | not resulting in vision | |
| occult | hidden / hidden and difficult to see | |
| ultraviolet | Having or employing wavelengths shorter than light but longer than X-rays | |
| undetectable | not easily seen | |
| unseen | not seen or perceived | |
| See also | covert | Secret or hidden / hidden |
| imperceptible, unperceivable | impossible or difficult to perceive by the mind or senses | |
| Opposite | visible, seeable | capable of being seen |
| Spanish | invisible | |
| Catalan | invisible | |
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