1 Noun 0 Verb 3 Adj. 0 Adv.
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ENarduousNoun
EN
Ololygon arduous is a species of frog in the family Hylidae endemic to Brazil.
Ololygon arduousScinax arduous
bn:00391734n Concept
ENarduousAdjective
EN
Characterized by effort to the point of exhaustion; especially physical effort
backbreakinggrueling
bn:00097470a Concept
EN
Taxing to the utmost; testing powers of endurance
strainingstrenuous
bn:00097471a Concept
EN
Difficult to accomplish; demanding considerable mental effort and skill
bn:00097472a Concept