Based primarily on surmise rather than adequate evidence.

synoniemen: conjectural, divinatory, hypothetic, hypothetical, supposed, suppositional, suppositious.

Roget 2: inexistent^†, nonexistent etc. 1; negative, blank; missing, omitted; absent etc. 187; insubstantial, shadowy, spectral, visionary.    unreal, potential, virtual; baseless, in nubibus [Lat.]; unsubstantial etc. 4; vain.    unborn, uncreated^†, unbegotten, unconceived, unproduced, unmade.    perished, annihilated, etc. v.; extinct, exhausted, gone, lost, vanished, departed, gone with the wind; defunct etc. (dead) 360.    fabulous, ideal etc. (imaginary) 515, supposititious etc. 514.    ... meer laten zien

Roget 925: undue; unlawful etc. (illegal) 964; unconstitutional; illicit; unauthorized, unwarranted, disallowed, unallowed^†, unsanctioned, unjustified; unentitled^†, disentitled, unqualified, disqualified; unprivileged, unchartered.    illegitimate, bastard, spurious, supposititious, false; usurped.    tortious [Law].    undeserved, unmerited, unearned; unfulfilled.    forfeited, disfranchised.    improper; unmeet, unfit, unbefitting, unseemly; unbecoming, misbecoming^†; seemless^†; contra bonos mores [Lat.]; not the thing, out of the question, not to be thought of; preposterous, pretentious, would-be.    ... meer laten zien

Roget 546: untrue, false, phony, trumped up; void of foundation, without-foundation; fictive, far from the truth, false as dicer's oaths; unfounded, ben trovato [It], invented, fabulous, fabricated, forged; fictitious, factitious, supposititious, surreptitious; elusory^†, illusory; ironical; soi-disant [Fr.] etc. (misnamed) 565.    ... meer laten zien

Roget 545: deceived etc. v.; deceiving &c.; cunning etc. 702; prestigious^†, prestigiatory^†; deceptive, deceptious^†; deceitful, covinous^†; delusive, delusory; illusive, illusory; elusive, insidious, ad captandum vulgus [Lat.].    untrue etc. 546; mock, sham, make-believe, counterfeit, snide [Slang], pseudo, spurious, supposititious, so-called, pretended, feigned, trumped up, bogus, scamped, fraudulent, tricky, factitious bastard; surreptitious, illegitimate, contraband, adulterated, sophisticated; unsound, rotten at the core; colorable; disguised; meretricious, tinsel, pinchbeck, plated; catchpenny; Brummagem.    artificial, synthetic, ersatz [G.]; simulated etc. 544.    ... meer laten zien

Roget 468: countervailing etc. v.; contradictory.    unattested, unauthenticated, unsupported by evidence; supposititious.   

Roget 514: supposing etc. v.; given, mooted, postulatory^†; assumed etc. v.; supposititious, suppositive^†, suppositious; gratuitous, speculative, conjectural, hypothetical, theoretical, academic, supposable, presumptive, putative; suppositional.    suggestive, allusive.    ... meer laten zien