Synonyms of arcane

arcane

adjective

är-ˈkān 

1

as in esoteric

difficult for one of ordinary knowledge or intelligence to understand

grammatical rules that seem arcane to generations of students who were never taught grammar in the first place

Synonyms & Similar Words

• esoteric
• profound
• recondite
• abstruse
• scholarly
• ambiguous
• hermetic
• deep
• academic
• mystical
• confusing
• complicated
• complex
• mystic
• enigmatic
• mysterious
• cryptic
• erudite
• pedantic
• inscrutable
• incomprehensible
• learned
• unintelligible
• uncanny
• unfathomable
• impenetrable
• unknowable
• baffling
• perplexing
• puzzling
• confounding
• unanswerable
• orphic
• disorienting
• mystifying
• darkling
• hard
• bewildering

Antonyms & Near Antonyms

• superficial
• simple
• shallow
• easy
• straightforward
• intelligible
• understandable
• obvious
• apparent
• comprehensible
• distinct
• plain
• clear
• facile
• evident
• transparent
• lucid
• manifest
• fathomable
• clear-cut
• perspicuous

2

as in cryptic

having an often intentionally veiled or uncertain meaning

the rebate form uses arcane language, the only purpose of which seems to be to disqualify buyers from actually getting a rebate

Synonyms & Similar Words

• cryptic
• ambiguous
• obscure
• dark
• esoteric
• mystic
• mysterious
• enigmatic
• murky
• vague
• opaque
• inscrutable
• unclear
• occult
• nebulous
• questionable
• Delphic
• deep
• equivocal
• elliptical
• recondite
• uncertain
• abstruse
• confusing
• fuliginous
• obscurant
• complicated
• double-edged
• weird
• uncanny
• eerie
• incomprehensible
• cloaked
• shadowy
• shrouded
• fuzzy
• indirect
• indecipherable
• complex
• inexplicable
• difficult
• masked
• concealed
• obfuscatory
• disguised
• clouded
• inexact
• hazy
• foggy
• misty
• puzzling
• faint
• shaded
• indistinct
• invisible
• mystifying
• impenetrable
• indefinite
• undefined
• noncommittal
• muddy
• baffling
• perplexing
• intangible
• dim
• indistinguishable
• unknowable
• confounding
• bewildering
• cloudy
• unanswerable
• unfathomable
• undetermined
• sphinxlike
• impalpable
• inexplicit
• obtuse
• circuitous
• shadowlike
• beclouded
• inappreciable
• bedimmed
• roundabout
• befogged
• obnubilated

Antonyms & Near Antonyms

• obvious
• plain
• clear
• certain
• accessible
• unambiguous
• distinct
• intelligible
• understandable
• evident
• comprehensible
• unequivocal
• legible
• bright
• sure
• strong
• pellucid
• direct
• knowable
• firm
• defined
• nonambiguous
• explicit
• fathomable
• exact
• definite
• straightforward
• self-evident
• self-explanatory
• determined
• tangible
• visible
• appreciable
• palpable
• blatant
• unmistakable
• patent

3

as in mysterious

being beyond one's powers to know, understand, or explain

my predecessor in this job obviously had his own arcane system for filing things, and so I haven't a clue as to where anything is

Synonyms & Similar Words

• mysterious
• cryptic
• mystic
• obscure
• uncanny
• enigmatic
• deep
• dark
• inscrutable
• occult
• unexplainable
• murky
• impenetrable
• ambiguous
• vague
• mystical
• esoteric
• confusing
• metaphysical
• shadowy
• fuzzy
• incomprehensible
• unintelligible
• supernatural
• unfathomable
• recondite
• inexplicable
• unaccountable
• darkling
• abstruse
• imponderable
• unknowable
• equivocal
• unanswerable
• puzzling
• baffling
• perplexing
• confounding
• numinous
• mystifying
• disorienting
• unsearchable
• bewildering
• befuddling

Antonyms & Near Antonyms

• intelligible
• understandable
• obvious
• apparent
• plain
• clear
• evident
• fathomable
• transparent
• manifest
• unambiguous
• straightforward
• unmistakable
• palpable
• unequivocal
• patent
• perspicuous
• open-and-shut

Example Sentences

Recent Examples of arcane

The early quantum pioneers didn’t realize — at first — that the arcane math that strikingly captured the conduct of atoms had left the real world behind. — Quanta Magazine, 26 Aug. 2026

For most Thai citizens, the selection of 200 new senators in 2024 through an arcane and untested self-nomination system barely registered, creating ample opportunity for manipulation. — Duncan McCargo, Foreign Affairs, 24 Aug. 2026

The reason that everyone is suddenly talking about Natalie Harp is because of speechwriting, an origin that seems almost arcane in the rhetoric-hungry electorate. — Doreen St. Félix, New Yorker, 22 Aug. 2026

That’s not just an arcane question of interest to paleontologists. — Alex Knapp, Forbes.com, 21 Aug. 2026