freethinker

From free +‎ thinker, since 1692.

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Freethought

Wikipedia

freethinker (plural freethinkers)

A person who has formed his or her opinions using reason and rational enquiry; somebody who has rejected dogma, especially with regard to religion.
(Singapore, Malaysia) A person with no religion.
- 2015 April 6, Siau Ming En, “Religiosity on rise in Asia-Pacific, proportion of freethinkers on decline”, in Today Online‎, archived from the original on 10 April 2015:
  The report projected that in the Asia-Pacific region, the proportion of freethinkers is projected to decline from 21 per cent in 2010 to 17 per cent in 2050.

Danish: fritænker (calque)
French: libre-penseur (calque)
German: Freidenker (calque)
- Russian: вольноду́м (volʹnodúm), вольноду́мец (volʹnodúmec) (calque)

person who has formed his or her opinions using reason and rational enquiry

Armenian: ազատամիտ (hy) (azatamit)
Belarusian: вальнаду́мец m (valʹnadúmjec), вальнаду́мка f (valʹnadúmka)
Catalan: lliurepensador (ca) m, lliurepensadora (ca) f
Danish: fritænker c
Esperanto: liberpensulo
Finnish: vapaa-ajattelija
French: libre-penseur (fr) m, libre-penseuse (fr) f
Galician: librepensador m, librepensadora f
Georgian: თავისუფლად მოაზროვნე (tavisuplad moazrovne)
German: Freidenker (de) m, Freidenkerin (de) f
Hungarian: szabadgondolkodó (hu)
Irish: saorsmaointeoir m
Italian: libero pensatore m, libero pensatrice f
Kazakh: еркін ойлы (erkın oily)
Norwegian:
Bokmål: fritenker m

Nynorsk: fritenkar m, fritenkjar m
Polish: wolnomyśliciel (pl) m, wolnomyślicielka f
Portuguese: livre-pensador m, livre-pensadora f
Romanian: liber-cugetător (ro) m, liber-cugetătoare f
Russian: вольноду̀мец (ru) m (volʹnodùmec), свободомы́слящий (ru) m (svobodomýsljaščij)
Spanish: librepensador (es) m, librepensadora (es) f
Ukrainian: вільноду́мець m (vilʹnodúmecʹ), вільноду́мка f (vilʹnodúmka)
Welsh: rhydd-feddyliwr m, rhydd-feddyliwraig f