Difference between Unsure and Dubious

UNSURE vs DUBIOUS: ADJECTIVE

Not convinced
Open to doubt or suspicion
Fraught with uncertainty or doubt
Fraught with uncertainty or doubt; undecided.
Of questionable character.
Doubtful or not settled in opinion; being in doubt; wavering or fluctuating; undetermined.
Occasioning doubt; not clear, or obvious; equivocal; questionable; doubtful.
Of uncertain event or issue.
Arousing doubt; questionable; open to suspicion.
In disbelief; wavering, uncertain, or hesitating in opinion; inclined to doubt; undecided.
Arousing doubt; doubtful.

Doubtful, Ambiguous, etc. (see obscure, a.); questionable, problematical, puzzling.
Liable to doubt or suspicion; of doubtful quality or propriety; questionable: as, a man of dubious character; a dubious transaction; his morals or his methods are dubious. Synonyms Unsettled, undetermined.
Of uncertain event or issue: as, a dubious undertaking.
Doubtful; marked by or occasioning doubt or uncertainty; difficult to determine or relieve of uncertainty; not distinct or plain; puzzling: as, a dubious question; a dubious light.
Doubting; hesitating; wavering or fluctuating in opinion, but inclined to doubt.

Undecided, Unclear, Incertain, Groping, Unsafe, Shy, Insecure, Diffident, Dubious, Timid, Unconfident, Ambivalent, Doubtful, Hesitant, Uncertain

Disputable, Iffy, Disreputable, Murky, Debatable, Spurious, Dodgy, Incertain, Dubitable, In question, Unsure, Uncertain, Unconvinced, Doubtful, Questionable

Undecided, Unclear, Incertain, Groping, Unsafe, Shy, Insecure, Diffident, Dubious, Timid, Unconfident, Ambivalent, Doubtful, Hesitant, Uncertain

Disputable, Iffy, Disreputable, Murky, Debatable, Spurious, Dodgy, Incertain, In question, Dubitable, Unsure, Uncertain, Unconvinced, Doubtful, Questionable

If unsure, ask your course coordinator for clarification.
CONSULT WITH THE LEAGUE IF YOU ARE UNSURE.
Still unsure if I did the right thing.
Unsure which software best fits your business needs?
Unsure which one is better for your website?
Sarah nodded, obviously still unsure about the situation.
He is unsure if we will run again.
If unsure where to save, select the Desktop.
She gets up, unsure what to do next.
SK agent at lax seemed unsure, Arlanda customer service agents at baggage in Arlanda also seemed unsure.

ANT: Thick, turbid, opaque, intransparent, mysterious, dubious, questionable.
Baghdad such remarks become increasingly dubious under closerscrutiny.
Imaginary homelands: the dubious cartographies of Australian identity.
Many free online courses are of dubious quality.
Funny no mention of their dubious business practices?
The recruiter seemed dubious I could do this.
Efficiency is a concept of very dubious value.
So we have to keep this constitutionally dubious doctrine to keep safe a constitutionally dubious authority over certain types of contraband.
Dubious ame and Elusi Dubious Fame and Elusive Foe nutrortune lish queen, Elizabeth, and the Spanish king, Philip II.
In the spiel, dubious arguments against dubious death sentences.