のやら

“I’m not sure whether … / It’s unclear if …” → Used to express uncertainty or lack of clear judgment about a single situation, often implying that the speaker cannot decide or determine the truth.

N1

Meaning

“I’m not sure whether … / It’s unclear if …” → Used to express uncertainty or lack of clear judgment about a single situation, often implying that the speaker cannot decide or determine the truth.

Formation

Clause (plain form) + のやら
Noun + な + のやら

Explanation

のやら is used when the speaker:

  • does not have enough information

  • feels unsure or confused

  • avoids making a firm judgment

Unlike のやら〜のやら, which lists two alternatives,
のやら (single) focuses on one unclear point, leaving the uncertainty open-ended.

It is commonly used in:

  • written descriptions

  • reflective narration

  • polite or indirect explanations

  • JLPT N1 reading passages

💡 Core nuance:
“It’s hard to tell whether this is the case.”