Definition for ARD'U-OUS

ARD'U-OUS, a. [L. arduus; Ir. ard, high; W. hardh; Ir. airdh, high, highth.]

  1. High, lofty, in a literal sense; as, arduous paths. – Pope.
  2. Difficult; attended with great labor, like the ascending of activities; as, an arduous employment, task, or enterprise.

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