Russian

Adjective

бездоказа́тельный • ‎(bezdokazátelʹnyj)

1. unsubstantiated, unfounded, unproved

References

• Arapova, N. S. (2000), “бездоказательный”, in Kalʹki v russkom jazyke poslepetrovskovo perioda. Opyt slovarja [Calques in Post-Petrine Russian. An Essay of a Dictionary] (in Russian), Moscow: Moscow University Press, page 51