8
illegally(adverb, illegally, illicitly, inexcusably, unpardonably)
7
illicitly(adverb, illegally)
6
illegitimately(adverb, illegally, illicitly)
5
lawlessly(adverb, illegally)
4
criminally(adverb, illegally, illicitly)
4
wrongfully(adverb, illegally)
4
wrongly(adverb, illegally, illicitly, inexcusably, unpardonably)
3
unconstitutionally(adverb, illegally)
3
unjustifiably(adverb, basis, illegally)
3
unjustly(adverb, illegally, illicitly)
2
dishonestly(adverb, illicitly)
2
forbiddenly
2
immorally(adverb, illicitly)
2
in an unlawful manner
2
irregularly
2
misbegottenly
1
actionably(adverb, illegally)
1
adulterinely
1
feloniously(adverb, illegally)
1
illegal
11 years ago|1.7k views|share |citing 
APASmart Define. (2015). unlawfully thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unlawfully/thesaurus/synonyms
ChicagoSmart Define. 2015. "unlawfully thesaurus" https://smartdefine.org/unlawfully/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unlawfully thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unlawfully/thesaurus/synonyms>.
MLASmart Define. "unlawfully thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/unlawfully/thesaurus/synonyms>