squalid (adj.)
- abject
- abominable
- arrant
- atrocious
- awful
- base
- beastly
- beat-up
- bedraggled
- beggarly
- black
- blameworthy
- blowzy
- broken-down
- brutal
- careless
- cheesy
- chintzy
- contemptible
- crummy
- debased
- degraded
- deplorable
- depraved
- despicable
- detestable
- dilapidated
- dingy
- dire
- dirty
- disgusting
- disheveled
- disreputable
- draggled
- dreadful
- egregious
- enormous
- execrable
- fetid
- filthy
- flagrant
- foul
- frowzy
- frumpish
- frumpy
- fulsome
- grave
- grievous
- gross
- grubby
- hateful
- heinous
- horrible
- horrid
- ignoble
- impure
- infamous
- informal
- lamentable
- little
- loathsome
- loose
- lousy
- low
- low-down
- lumpen
- mangy
- mean
- measly
- messy
- miserable
- monstrous
- mussy
- nasty
- nefarious
- negligent
- noisome
- notorious
- obnoxious
- odious
- offensive
- outrageous
- paltry
- petty
- pitiable
- pitiful
- poky
- poor
- ragged
- rank
- regrettable
- reprehensible
- reptilian
- repulsive
- rotten
- ruinous
- run-down
- sad
- scabby
- scandalous
- scraggly
- scrubby
- scruffy
- scummy
- scurvy
- seedy
- shabby
- shameful
- shocking
- shoddy
- slack
- slatternly
- sleazy
- slipshod
- sloppy
- slovenly
- slummy
- sluttish
- small
- sordid
- tacky
- tattered
- terrible
- ugly
- unclean
- uncleanly
- unkempt
- unmentionable
- unsightly
- untidy
- vile
- villainous
- woeful
- worst
- worthless
- wretched