From in- + conceivable .
inconceivable (comparative more inconceivable , superlative most inconceivable )
Unable to be conceived or imagined ; unbelievable .
2022 September 8, Stephen Bates, “Queen Elizabeth II obituary”, in The Guardian [1] :While the world altered dramatically during the course of her reign, the monarchy did too, though rather more imperceptibly: the walkabouts that increasingly characterised royal appearances, the pop concerts at Buckingham Palace, the throwing open of the royal palaces to visitors – even the paying of income tax, and royal podcasts – would have been inconceivable as innovations at the time Elizabeth came to the throne.
unable to be conceived, unbelievable
Asturian: inconcebible
Belarusian: непасці́жны ( njepascížny ) , невыабража́льны ( njevyabražálʹny )
Bulgarian: неми́слим (bg) ( nemíslim ) , невъобрази́м (bg) ( nevǎobrazím )
Catalan: inconcebible
Chinese:
Mandarin: 不可思議 / 不可思议 (zh) ( bùkěsīyì ) , 難以置信 / 难以置信 (zh) ( nányǐzhìxìn )
Czech: nepředstavitelný
Dutch: onvoorstelbaar (nl) , ongelofelijk (nl)
Esperanto: neimagebla
Finnish: käsittämätön (fi) , uskomaton (fi)
French: inconcevable (fr)
Galician: inconcibible (gl) , inconcibíbel (gl)
Georgian: წარმოუდგენელი ( c̣armoudgeneli ) , დაუჯერებელი ( dauǯerebeli )
German: unfassbar (de) , unfasslich (de) , unbegreiflich (de) , unglaublich (de) , nicht wahrnehmbar
Greek: ακατανόητος (el) ( akatanóitos )
Hungarian: elképzelhetetlen (hu) , felfoghatatlan (hu) , elgondolhatatlan (hu) , hihetetlen (hu)
Italian: inconcepibile (it)
Latin: incōgitābilis
Norwegian:
Bokmål: utenkelig
Nynorsk: utenkeleg , utenkjeleg
Polish: niepojęty (pl) , niewyobrażalny (pl)
Portuguese: inconcebível (pt)
Romanian: neconceptibil , neverosimil (ro) , de neconceput , de neînțeles , de nepriceput
Russian: непостижи́мый (ru) ( nepostižímyj ) , немы́слимый (ru) ( nemýslimyj ) , невообрази́мый (ru) ( nevoobrazímyj )
Spanish: inconcebible (es)
Swedish: ofattbar (sv) , obegriplig (sv)
Tibetan: བསམ་ཡས ( bsam yas )
Ukrainian: незбагне́нний ( nezbahnénnyj ) , неми́слимий ( nemýslymyj ) , неуявле́нний ( neujavlénnyj )