pre-noun adjectival
Literary pre-noun adjectival; often used in formal or poetic contexts. Compare with the more common 数知れない.
See also: 数知れない (かずしれない)
Countless stars shone in the night sky.
He has overcome innumerable hardships.
From 数 (kazu, 'number') + 知れぬ (shirenu), the classical negative form of 知れる (shireru, 'to be known'). Literally 'number not known'.