Seemingly contradictory but nonetheless possibly true:
— It is paradoxical that standing is more tiring than walking.

synonym: self-contradictory.

Roget 475: uncertain; casual; random etc. (aimless) 621; changeable etc. 149.    doubtful, dubious; indecisive; unsettled, undecided, undetermined; in suspense, open to discussion; controvertible; in question etc. (inquiry) 461.    vague; indeterminate, indefinite; ambiguous, equivocal; undefined, undefinable; confused etc. (indistinct) 447; mystic, oracular; dazed.    perplexing etc. v.; enigmatic, paradoxical, apocryphal, problematical, hypothetical; experimental etc. 463.    unpredictable, unforeseeable (unknowable) 519.    fallible, questionable, precarious, slippery, ticklish, debatable, disputable; unreliable, untrustworthy.    contingent, contingent on, dependent on; subject to; dependent on circumstances; occasional; provisional.    unauthentic, unauthenticated, unauthoritative; unascertained, unconfirmed; undemonstrated; untold, uncounted.    in a state of uncertainty, in a cloud, in a maze; bushed, off the track; ignorant, etc. 491; afraid to say; out of one's reckoning, astray, adrift; at sea, at fault, at a loss, at one's wit's end, at a nonplus; puzzled etc. v.; lost, abroad, d_esorient_e; distracted, distraught.    ... show more

Roget 519: unintelligible, unaccountable, undecipherable, undiscoverable, unknowable, unfathomable; incognizable^†, inexplicable, inscrutable; inapprehensible^†, incomprehensible; insolvable^†, insoluble; impenetrable.    illegible, as Greek to one, unexplained, paradoxical; enigmatic, enigmatical, puzzling (secret) 533; indecipherable.    obscure, dark, muddy, clear as mud, seen through a mist, dim, nebulous, shrouded in mystery; opaque, dense; undiscernible etc. (invisible) 447^†; misty etc. (opaque) 426; hidden etc. 528; latent etc. 526.    indefinite, garbled etc. (indistinct) 447; perplexed etc. (confused) 59; undetermined, vague, loose, ambiguous; mysterious; mystic, mystical; acroamatic^†, acroamatical^†; metempirical; transcendental; occult, recondite, abstruse, crabbed.    inconceivable, inconceptible^†; searchless^†; above comprehension, beyond comprehension, past comprehension; beyond one's depth; unconceived.    inexpressible, undefinable, incommunicable.    unpredictable, unforeseeable.    ... show more

Polish: paradoksalny