particle N1 uncommon casualwritten
〜のやら — I wonder ~ (uncertainty
〜のやら ・ のやら
A full written guide for 〜のやら is on the way.
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See 〜のやら in real sentences
Jengo shows 〜のやら the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.
Study it in JengoSources Compiled from published Japanese grammar references.