和英辞書

やらん

phrase

(archaic, dialect) “isn't it?” / (archaic, dialect) expresses uncertainty or indefiniteness

やらんことはない、頑張ればできる。

There's nothing you can't do, if you try hard enough.

意味（1）

(archaic, dialect) “isn't it?”

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.

意味（2）

(archaic, dialect) expresses uncertainty or indefiniteness