Fouler Synonyms and Antonyms

So objectionable as to elicit despisal or deserve condemnation
(Adjective)
Violating accepted standards or rules
(Adjective)
Antonyms:
  1. purer
  2. cleaner
Disgustingly dirty; filled or smeared with offensive matter
(Adjective)
Antonyms:
  1. cleaner
  2. purer
Offensively malodorous
(Adjective)
Synonyms:
  1. smellier
  2. funkier
(of a manuscript) defaced with changes
(Adjective)