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The Collaborative International Dictionary
Travailous

Travailous \Trav"ail*ous\, a. Causing travail; laborious. [Obs.]
--Wyclif. -- Trav"ail*ous*ly, adv. [Obs.]
--Wyclif.

Wiktionary
travailous

a. (context obsolete English) Causing travail; laborious.