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 (do͞o′bē-əs, dyo͞o′-)
1. Fraught with uncertainty or doubt; undecided.
2. Arousing doubt; doubtful: a dubious distinction.
3. Of questionable character: dubious profits.

[From Latin dubius; see dwo- in Indo-European roots.]

du′bi·ous·ly adv.
du′bi·ous·ness n.


1. marked by or causing doubt: a dubious reply.
2. unsettled in mind; uncertain; doubtful
3. of doubtful quality; untrustworthy: a dubious reputation.
4. not certain in outcome
[C16: from Latin dubius wavering]
ˈdubiously adv
ˈdubiousness n


(ˈdu bi əs, ˈdyu-)

1. marked by or occasioning doubt; equivocal: a dubious reply.
2. of doubtful quality or propriety; questionable: a dubious compliment.
3. of uncertain outcome.
4. wavering in opinion; inclined to doubt; hesitant.
[1540–50; < Latin dubius; see -ous]
du′bi•ous•ly, adv.
du′bi•ous•ness, n.
syn: See doubtful.


1. 'doubtful'

If you feel doubtful about something, you are unsure about it or about whether it will happen or be successful.

Do you feel insecure and doubtful about your ability?
It was doubtful he would ever see her again.
2. 'dubious'

If you are dubious about something, you are not sure whether it is the right thing to do.

Alison sounded very dubious.
The men in charge were a bit dubious about taking women on.

If you describe something as dubious, you think it is not completely honest, safe, or reliable.

...his dubious abilities as a teacher.
3. 'suspicious'

If you are suspicious of a person, you do not trust them and think they might be involved in something dishonest or illegal.

I am suspicious of his intentions.
Miss Lenaut had grown suspicious.

If you describe something as suspicious, it suggests behaviour that is dishonest, illegal, or dangerous.

He listened for any suspicious sounds.
...in suspicious circumstances.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.dubious - fraught with uncertainty or doubt; "they were doubtful that the cord would hold"; "it was doubtful whether she would be admitted"; "dubious about agreeing to go"
incertain, uncertain, unsure - lacking or indicating lack of confidence or assurance; "uncertain of his convictions"; "unsure of himself and his future"; "moving with uncertain (or unsure) steps"; "an uncertain smile"; "touched the ornaments with uncertain fingers"
2.dubious - open to doubt or suspicion; "the candidate's doubtful past"; "he has a dubious record indeed"; "what one found uncertain the other found dubious or downright false"; "it was more than dubitable whether the friend was as influential as she thought"- Karen Horney
questionable - subject to question; "questionable motives"; "a questionable reputation"; "a fire of questionable origin"
3.dubious - not convinced; "they admitted the force of my argument but remained dubious"
unconvinced - lacking conviction; "I remain unconvinced"


1. suspect, suspicious, crooked, dodgy (Brit., Austral., & N.Z. informal), questionable, unreliable, shady (informal), unscrupulous, fishy (informal), disreputable, untrustworthy, undependable dubious business dealings
suspect reliable, dependable, trustworthy
2. unsure, uncertain, suspicious, hesitating, doubtful, sceptical, tentative, wavering, hesitant, undecided, unconvinced, iffy (informal), leery (slang), distrustful, in two minds (informal) My parents were a bit dubious about it all.
unsure sure, certain, positive, definite


شاكُّ، مُشْتَبِهمُريِبمُشْتَبَه فيه، مَشْكوكٌ فيه
efins, hikandivafasamur
abejotinas dalykasnetikrumas
đáng ngờ


[ˈdjuːbɪəs] ADJ
1. (= questionable) [reputation, claim, privilege, taste] → dudoso; [person, character, motives] → sospechoso; [company, offer] → poco fiable; [business deal, practice] → sospechoso, turbio; [idea, measure] → discutible; [compliment] → equívoco
to have the dubious honour/pleasure of doing sthtener el dudoso honor/placer de hacer algo
that paté looks a bit dubiousese paté tiene una pinta un poco sospechosa
of dubious benefitde beneficios dudosos
of dubious originde origen dudoso
of dubious qualityde dudosa calidad
2. (= unsure) [look, smile] → indeciso
to be dubioustener dudas or reservas
I was dubious at first, but he convinced meal principio tenía mis dudas or reservas, pero él me convenció
I'm very dubious about ittengo grandes dudas or reservas sobre ello
I am dubious that or whether the new law will achieve anythingtengo mis dudas or reservas sobre si la nueva ley va a lograr algo
he looked dubiousparecía tener dudas or reservas, parecía dudar
he sounded dubiousparecía tener dudas or reservas, parecía dudar


[ˈdjuːbiəs] adj
(= doubtful) [person] → hésitant(e), incertain(e)
to be dubious about sth → avoir des doutes sur qch, ne pas être sûr(e) de qch
My parents were a bit dubious about it → Mes parents avaient quelques doutes à ce sujet.
I'm very dubious about it → J'ai des doutes sur la question., Je n'en suis pas sûr du tout.
(= open to question) [reputation, record, company] → douteux/euse; [claim] → suspect(e)
to have the dubious honour of being ... → avoir le triste honneur d'être ...
to have the dubious distinction of being ... → avoir la triste distinction d'être ...
to have the dubious pleasure of seeing ... → avoir le privilège peu enviable de voir ...


(= questionable) reputation, personzweifelhaft; business dealfragwürdig, zweifelhaft; idea, claim, statement, basisfragwürdig; attributionfraglich; it seems dubious that…es erscheint fragwürdig, dass …; (= suspicious)es erscheint verdächtig, dass …; of dubious originzweifelhaften Ursprungs; of dubious benefit/qualityvon zweifelhaftem Nutzen/zweifelhafter Qualität; it sounds dubious to meich habe da meine Zweifel; to have the dubious honour (Brit) or honor (US) or distinction/pleasure of doing something (usu iro)die zweifelhafte Ehre/das zweifelhafte Vergnügen haben, etw zu tun
(= uncertain, unconvinced)unsicher; I was dubious at first, but he convinced meich hatte zuerst Bedenken, aber er überzeugte mich; I was dubious that or whether …ich bezweifelte, dass …; he’s dubious whether he should comeer weiß nicht or ist im Zweifel, ob er kommen soll; to be dubious about somethingetw anzweifeln; I’m very dubious about itich habe da doch starke Zweifel; he sounded dubiouser klang zweifelnd or skeptisch; she looked dubioussie blickte skeptisch drein; he gave me a dubious looker sah mich zweifelnd an


[ˈdjuːbɪəs] adj (gen) → dubbio/a; (look, smile) → dubbioso/a; (character, manner) → ambiguo/a, equivoco/a
to feel dubious about or as to what to do next → essere incerto/a sul da farsi
I'm very dubious about it → ho i miei dubbi in proposito


(ˈdjuːbiəs) adjective
1. doubtful. I am dubious about the wisdom of this action.
2. probably not honest. dubious behaviour.
dubiety (djuˈbaiəti) noun
(formal) doubt; dubiousness.
ˈdubiousness noun


مُريِب pochybný tvivlsom zweifelhaft διφορούμενος dudoso epäilyttävä douteux dvojben incerto 怪しげな 의심스러운 dubieus tvilsom wątpliwy duvidoso сомнительный tvivelaktig น่าสงสัย kuşkulu đáng ngờ 暧昧的
References in classic literature ?
It was new and rather stiff, and that made him dubious.
He looked -- well, he merely looked dubious, it's the most I can say; so did the others.
Within a few days the fate of the speculation became so dubious that Mr.
His manners, however, must have been unmarked, wavering, dubious, or she could not have been so misled.
A fortnight of dubious calm succeeded my return to Thornfield Hall.
Cruncher was soothed, but shook his head in a dubious and moral way.
They would be obliged to "run away"--a course as dark and dubious as a balloon journey.
yet not for those Nor what the Potent Victor in his rage Can else inflict do I repent or change, Though chang'd in outward lustre; that fixt mind And high disdain, from sence of injur'd merit, That with the mightiest rais'd me to contend, And to the fierce contention brought along Innumerable force of Spirits arm'd That durst dislike his reign, and me preferring, His utmost power with adverse power oppos'd In dubious Battel on the Plains of Heav'n, And shook his throne.
The lower and interior space was soon filled by substantial yeomen and burghers, and such of the lesser gentry, as, from modesty, poverty, or dubious title, durst not assume any higher place.
So that controversies, wranglings, disputes, and positiveness, in false or dubious propositions, are evils unknown among the HOUYHNHNMS.
In the same way, since in action it frequently happens that no delay is permissible, it is very certain that, when it is not in our power to determine what is true, we ought to act according to what is most probable; and even although we should not remark a greater probability in one opinion than in another, we ought notwithstanding to choose one or the other, and afterwards consider it, in so far as it relates to practice, as no longer dubious, but manifestly true and certain, since the reason by which our choice has been determined is itself possessed of these qualities.
In the course of about an hour I had really convinced several of the Beast Folk of the truth of my assertions, and talked most of the others into a dubious state.