[ doo-bee-uhs, dyoo- ]
/ ˈdu bi əs, ˈdyu- /


doubtful; marked by or occasioning doubt: a dubious reply.
of doubtful quality or propriety; questionable: a dubious compliment; a dubious transaction.
of uncertain outcome: in dubious battle.
wavering or hesitating in opinion; inclined to doubt.

Origin of dubious

1540–50; < Latin dubius; see -ous

Related forms

Synonym study

4. See doubtful.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for dubiously

British Dictionary definitions for dubiously


/ (ˈdjuːbɪəs) /


marked by or causing doubta dubious reply
unsettled in mind; uncertain; doubtful
of doubtful quality; untrustworthya dubious reputation
not certain in outcome

Derived Forms

dubiously, adverbdubiousness, noun

Word Origin for dubious

C16: from Latin dubius wavering
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012