Served without milk or cream:
Dull or slow-witted:
Having low diffused light; dim or shadowy.
Unclear, obscure, cryptic, etc.
So faintly perceptible as to lack clear delineation; indistinct:
Find another word for caliginous. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for caliginous, like: dark, dim, dusky, murky, obscure and light.