やらん の意味 | Babel Free

定義

1. “isn't it?”
   archaic, dialectal
2. expresses uncertainty or indefiniteness
   archaic, dialectal

例文

“When used at the end of a sentence. Replaced in modern standard Japanese by だろう (darō) in casual informal speech, and でしょう (deshō) in more generally polite speech.”

“When used mid-sentence following a noun. Generally preceded by adverbial particle と (to).”

CEFRレベル