There are 13 solutions. The longest is PERCEPTIBLE with 11 letters, and the shortest is OPTIC with 5 letters.
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Yes, clue "OPTICAL" is trending right now (last checked on 01 Oct 2026). It seems to be puzzling a lot of people!
Solutions are between 5 and 11 letters long.
| Clue | Answer |
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| Like spectroscopes and microscopes (7) | |
| Concerning vision (7) | |
| Of the eye (7) | |
| Relating to vision (7) | |
| Type of illusion (7) | |
| Relating to sight (7) | |
| Kind of illusion (7) | |
| Of vision (7) | |