caligation means dimness; cloudiness. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “caligation” is a great word
CALIGATION — [Noun] A state of dimness or cloudiness, particularly of the eyes or pervading the atmosphere. Borrowed from Latin caligatio, from caligare (“to be dark, to emit vapour”), from caligo (“mist, darkness”). First attested in English in 1615. Unlike “obscurity,” which pertains to a lack of clarity in meaning or renown, or “haze,” which denotes a specific, particulate suspension in the air, caligation is a more intimate, pervasive murk that rises from within perception. It is the grey film swimming before weary eyes, the spectral fog smothering a moor at dusk, and the permanent, milky shroud settling over a cataract-clouded lens—a quiet, persistent subtraction of light that precedes the long dark.
Etymology
Borrowed from Latin caligatio, from caligare (“to emit vapour, to be dark”), from caligo (“mist, darkness”).
noun
- dimness; cloudiness“Now instead of a diminution or imperfect vision in the Moll, we affirm an abolition or totall privation; in stead of caligation or dimnesse, we conclude a cecity or blindness, which hath been frequently inferred concerning other animals;”