SQUALIDLY
sordidly, squalidly
(adverb) in a sordid or squalid way
Source: WordNet® 3.1
Etymology
Adverb
squalidly (comparative more squalidly, superlative most squalidly)
In a squalid manner.
Source: Wiktionary
Squal"id*ly, adv.
Definition: In a squalid manner.
SQUALID
Squal"id, a. Etym: [L. squalidus, fr. squalere to be foul or filthy.]
Definition: Dirty through neglect; foul; filthy; extremely dirty.
Uncomed his locks, and squalid his attrie. Dryden.
Those squalid dens, which are the reproach of large capitals.
Macaulay.
Source: Webster’s Unabridged Dictionary 1913 Edition