taru-adjective, adverb taking the 'to' particle
Literary, somewhat old-fashioned word describing something stretching endlessly, such as a plain, desert, or ocean. Often used in descriptive, poetic, or formal contexts.
A vast desert stretched out before my eyes.
He gazed at the boundless grassland.
Variant kanji spelling using the repetition mark 々.
The exact derivation is uncertain; the kanji 漫 (man) carries meanings of 'spreading' or 'overflowing', and the reduplication reinforces the sense of boundlessness.