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Dictionary.com
Definitions

clear as mud

ADJECTIVE
equivocal
Synonyms
STRONGEST
ambiguous ambivalent dubious evasive muddled puzzling unclear vague
WEAK
amphibological borderline clouded disreputable fishy fuzzy hazy indefinite indeterminate indistinct misleading muzzy oblique obscure open problematic questionable suspect suspicious tenebrous undecided unexplicit unintelligible with mixed feelings
Antonyms
STRONGEST
certain clear definite sure
WEAK
determined obvious plain unequivocal unquestionable
ADJECTIVE
incomprehensible
Synonyms
STRONGEST
baffling impenetrable inconceivable mystifying opaque puzzling unfathomable unimaginable unintelligible
WEAK
Delphic beats me beyond comprehension beyond one's grasp cryptic enigmatic fathomless incognizable inscrutable mysterious obscure over one's head perplexing sibylline unclear ungraspable unknowable
Antonyms
STRONGEST
believable clear comprehensible fathomable imaginable intelligible understandable
ADJECTIVE
obscure
Synonyms
STRONGEST
ambiguous arcane complicated confusing cryptic enigmatic esoteric mysterious vague
STRONG
concealed dim hidden involved occult
WEAK
abstruse dark deep doubtful enigmatical far-out hazy illegible illogical impenetrable incomprehensible inconceivable incredible indecisive indefinite indeterminate indistinct inexplicable inscrutable insoluble intricate opaque recondite unaccountable unbelievable unclear undefined unfathomable unintelligible
Antonyms
STRONGEST
clear common definite known obvious plain straightforward
STRONG
bare exposed open
WEAK
apparent understood
ADJECTIVE
uncomprehensible
Synonyms
WEAK
Delphic baffling beats me beyond comprehension beyond one's grasp cryptic enigmatic fathomless impenetrable incognizable inconceivable inscrutable mysterious mystifying obscure opaque over one's head perplexing puzzling sibylline unclear unfathomable ungraspable unimaginable unintelligible unknowable
ADJECTIVE
unfathomable
Synonyms
STRONGEST
baffling impenetrable incomprehensible indecipherable inexplicable unknowable
WEAK
abstruse deep enigmatic esoteric heavy incognizable obscure profound too deep uncomprehensible ungraspable unintelligible
Antonyms
STRONGEST
clear comprehensible intelligible understandable
WEAK
believable explainable explicable fathomable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“It’s about as clear as mud right now,” he said.

From The Wall Street Journal • Dec. 9, 2025

"It is as clear as mud," says Mr Down.

From BBC • Apr. 4, 2025

He said the team went into “pretty good detail, not trying to discredit Tyler, but effectively saying he was wrong. However, that ended up being as clear as mud to us.”

From Seattle Times • Apr. 15, 2024

And yet again, the picture there is clear as mud.

From Reuters • Sep. 18, 2023

Joe certainly had a way of making everything as clear as mud.

From "The Milagro Beanfield War" by John Nichols