o radd i radd

== Welsh == === Etymology === Literally “from stage to stage”. === Prepositional phrase === o radd i radd step by step Synonyms: yn raddol, yn gynyddol, cam a cham, o gam i gam, o hwrdd i hwrdd, o glun i glun, chwŷf na chwŷf, wrth raddau, o ris i ris, bob yn gam === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “o radd i radd”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies