Synonyms of the word

incomprehensible

• adj. Impossible or very difficult to understand.

cryptic

• adj. Having hidden meaning.
• adj. Mystified or of an obscure nature.
• adj. Involving use of code or cipher/cypher.
• adj. (zoology) Well camouflaged; having good camouflage.
• adj. (biology) Apparently identical, but actually genetically distinct.
• n. (informal) A cryptic crossword.

cryptical

• adj. cryptic.

dark

• adj. Having an absolute or (more often) relative lack of light.
• adj. (of colour) Dull or deeper in hue; not bright or light.
• adj. Hidden, secret, obscure.
• adj. Without moral or spiritual light; sinister, malign.
• adj. Conducive to hopelessness; depressing or bleak.
• adj. Lacking progress in science or the arts; said of a time period.
• adj. With emphasis placed on the unpleasant aspects of life; said of a work of fiction, a work of nonfiction…
• n. A complete or (more often) partial absence of light.
• n. (uncountable) Ignorance.
• n. (uncountable) Nightfall.
• n. A dark shade or dark passage in a painting, engraving, etc.

deep

• adj. (heading, of a physical distance) Extending far away from a point of reference, especially downwards.
• adj. (heading, intellectual, social) Complex, involved.
• adj. (sound, voice) Low in pitch.
• adj. (of a color) Dark and highly saturated.
• adj. (sleep) Sound, heavy (describing a state of sleep from which one is not easily awoken).
• adj. Immersed, submerged (in).
• adj. Muddy; boggy; sandy; said of roads.
• adv. Deeply.
• n. (literary, with "the") The deep part of a lake, sea, etc.
• n. (rare) A deep shade of colour.
• n. (US, rare) The profound part of a problem.
• n. (with "the") The sea, the ocean.
• n. (cricket) A fielding position near the boundary.

enigmatic

• adj. Pertaining to an enigma.
• adj. Mysterious.
• adj. Defying description.
• adj. (variant) Enigmatical.

enigmatical

• adj. Pertaining to an enigma.
• adj. Alternate of enigmatic.

impenetrable

• adj. Not penetrable.
• adj. (figuratively) Incomprehensible; inscrutable.

incomprehensible

• adj. Impossible or very difficult to understand.

indecipherable

• adj. Not decipherable; impossible to decode, read, understand or comprehend.

inexplicable

• adj. Impossible to explain; not easily accounted for.

inscrutable

• adj. Difficult or impossible to comprehend, fathom, or interpret.
• n. One who or that which is inscrutable; a person, etc. that cannot be comprehended.

insoluble

• adj. That cannot be dissolved.
• adj. That cannot be solved; unsolvable; insolvable.
• adj. That cannot be explained; mysterious or inexplicable.
• adj. That cannot be broken down; dispersed.
• n. Any substance that cannot be dissolved.

lost

• v. simple past tense and past participle of lose.
• adj. Having wandered from, or unable to find, the way.
• adj. In an unknown location; unable to be found.
• adj. Not perceptible to the senses; no longer visible.
• adj. Parted with; no longer held or possessed.
• adj. Not employed or enjoyed; thrown away; employed ineffectually; wasted; squandered.
• adj. Ruined or destroyed, either physically or morally; past help or hope.
• adj. Hardened beyond sensibility or recovery; alienated; insensible.
• adj. Occupied with, or under the influence of, something, so as not to notice external things.

missed

• v. simple past tense and past participle of miss.

mysterious

• adj. Of unknown origin.
• adj. Having unknown qualities.
• adj. Difficult to understand.
• adj. Deliberately evasive or enigmatic.

mystifying

• adj. Very hard to understand; baffling.
• v. present participle of mystify.

obscure

• adj. Dark, faint or indistinct.
• adj. Hidden, out of sight or inconspicuous.
• adj. difficult to understand.
• adj. not well-known.
• v. (transitive) To render obscure; to darken; to make dim; to keep in the dark; to hide; to make less visible,…
• v. (transitive) To hide, put out of sight etc.
• v. (intransitive, obsolete) To conceal oneself; to hide.

opaque

• adj. Neither reflecting nor emitting light.
• adj. Allowing little light to pass through, not translucent or transparent.
• adj. (figuratively) Unclear, unintelligible, hard to get or explain the meaning of.
• adj. (figuratively) Obtuse, stupid.
• adj. (computing) Describes a type for which higher-level callers have no knowledge of data values or their…
• n. (obsolete, poetic) An area of darkness; a place or region with no light.
• n. Something which is opaque rather than translucent.
• v. (transitive) To make, render (more) opaque.

paradoxical

• adj. Having self-contradictory properties.

puzzling

• v. present participle of puzzle.
• adj. Difficult to understand or explain; enigmatic or confusing; perplexing.
• n. Time spent pondering something confusing.

self-contradictory

• adj. Of statements that contradict themselves, ultimately logically corrupting the statement.

unaccountable

• adj. inexplicable; unable to account for, or explain.
• adj. not responsible; free from accountability or control.

unclear

• adj. Ambiguous; liable to more than one interpretation.
• adj. Not clearly or explicitly defined.
• adj. Not easy to see or read; indecipherable or unreadable.
• adj. Not having a clear idea; uncertain.

uncomprehensible

• adj. Incomprehensible.

unexplainable

• adj. That cannot be explained; inexplicable.

unexplained

• adj. Not explained. Of unknown cause or origin.

unfathomable

• adj. Impossible to fathom or understand; incomprehensible.
• adj. Difficult to penetrate.

unintelligible

• adj. Not intelligible; unable to be understood.