atsain

== Welsh == === Etymology === From at- +‎ sain (“sound”). === Pronunciation === IPA(key): /ˈatsai̯n/ === Noun === atsain f (plural atseiniau) echo Synonyms: adlais, adlef ==== Derived terms ==== atseinio (“to echo, to resound”) === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “atsain”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies