dubious

As adjectives the difference between dubious and false

is that dubious is arousing doubt; questionable; open to suspicion while false is untrue, not factual, factually incorrect.

As a noun false is

one of two options on a true-or-false test.

As an adverb false is

not truly; not honestly; falsely.

Dubious is a related term of shaky.

As adjectives the difference between dubious and shaky

is that dubious is arousing doubt; questionable; open to suspicion while shaky is shaking]] or [[tremble|trembling.

Dubious is a synonym of unsettled.

As adjectives the difference between dubious and unsettled

is that dubious is arousing doubt; questionable; open to suspicion while unsettled is disturbed, upset.

As a verb unsettled is

(unsettle).

Dubious is a related term of preposterous.

As adjectives the difference between dubious and preposterous

is that dubious is arousing doubt; questionable; open to suspicion while preposterous is absurd, or contrary to common sense.

Dubious is a related term of indistinct.

As adjectives the difference between dubious and indistinct

is that dubious is arousing doubt; questionable; open to suspicion while indistinct is (of an image etc) not clearly defined or not having a sharp outline; faint or dim.

Distrustful is a related term of dubious.

As adjectives the difference between distrustful and dubious

is that distrustful is marked by distrust; doubtful; suspicious while dubious is arousing doubt; questionable; open to suspicion.

As adjectives the difference between dubious and unstable

is that dubious is arousing doubt; questionable; open to suspicion while unstable is having a strong tendency to change.

Theoretical is a related term of dubious.

As adjectives the difference between theoretical and dubious

is that theoretical is of or relating to theory; abstract; not empirical while dubious is arousing doubt; questionable; open to suspicion.

As an adjective dubious

is arousing doubt; questionable; open to suspicion.

As a verb vacillate is

to sway unsteadily from one side to the other; oscillate.

As adjectives the difference between deceitful and dubious

is that deceitful is deliberately misleading or cheating while dubious is arousing doubt; questionable; open to suspicion.