rhagdybio

== Welsh == === Etymology === From rhag- (“pre-, fore-”) +‎ tybio (“think, suppose”). === Verb === rhagdybio (first-person singular present rhagdybiaf) to presuppose, presume ==== Conjugation ==== ==== Derived terms ==== rhagdybiaeth (“hypothesis”) === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “rhagdybio”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies