Lacking or having very little light:
The definition of dim is not bright, somewhat dark or unclear.
Rather dark in color:
Lacking light; dim; dark; murky
Not harsh or severe:
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.