- incalculable, undistinguished, unknowable, unexplainable, faraway, sealed, unfathomable, uninvestigated, far, hidden, Unrenowned, transcendental, unbeknown, paradoxical, such and such, mystical, puzzling, unperceived, invisible, distant, unrevealed, nameless, unexplained, solved, A, unfathomed, peculiar, unplumbed, subliminal, uncelebrated, such-and-such, alien, Unspied, supernatural, baffling, indecipherable, inscrutable, perplexing, uncharted, bizarre, private, virgin, obscure, undeveloped, unseen, unexplored, incognito, anonymous, unapparent, unknown, undiscoverable, unidentified, untold, not explained, undetected, indefinable, mystifying, enigmatic, impenetrable, weird, Unascertained, little known, unnamed, inexplicable, alchemic, far-off, secret, subconscious, mysterious, Incog, unintelligible, undetermined, vague, unaccountable, odd, Unapprehended, humble, unsung, so-and-so, undiscovered, unsuspected, dark, preternatural, desolate, unclassified, occult, exotic, unsolved, unaccounted, unheard, remote, unexposed, strange, unnoted, new, untracked, Uninvented, X, magical, incomprehensible, able, far off, untouched, unrecognized, undisclosed, illegible, unheard of, uncertain, enigmatical, unheard-of, Undivulged, personal, unfamiliar, Untraced, concealed, so and so, incognizable, mystic, foreign.
Wilfrid looked about the room perplexed, and almost suspicious because of his unexplained perplexity. "The Complete Project Gutenberg Works of George Meredith" by George Meredith
It was only on hauling it down that the officer in command found it had been caused by the flag being improperly constructed, the technical explanation being that the distance line had been sewed in, the wrong way, with the taggle towards the bottom of the flag- a very trifling thing in itself, but which, if unexplained, might have led to serious consequences. "Flags: Some Account of their History and Uses." by Andrew Macgeorge