15
illegible(adjective, unreadable)
9
indecipherable
8
undecipherable(adjective, illegible)
7
unclear
7
foul
5
obscure
4
unreadable(adjective, illegible)
4
dark
4
incomprehensible
3
cryptic
3
mysterious
3
ambiguous
3
amorphous
2
inarticulate
2
incoherent
2
indefinite
2
inscrutable
2
nebulous
2
scribble
1
abortive
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APASmart Define. (2016). legible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/legible/thesaurus/antonyms
ChicagoSmart Define. 2016. "legible thesaurus" https://smartdefine.org/legible/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, legible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/legible/thesaurus/antonyms>.
MLASmart Define. "legible thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/legible/thesaurus/antonyms>