arduous is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

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Meanings

Adjective (COMPARABLE)

Comparative Superlative
more arduous most arduous
    Needing or using up much energy; testing powers of endurance. (obsolete) burning; ardent Difficult or exhausting to traverse.

arduous is a Scrabble valid word


arduous is an iScramble valid word


arduous is an QuickWords valid word


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Same letters words (Anagrams)


Same letters plus one


Same letters minus one