History
History
Synonyms
UK
US
Meaning:
ambiguous

having more than one interpretation

having more than one meaning

controversial

likely to cause controversy

at issue

debatable

that can be argued about because uncertain

controversial

disputable

that can be disputed

debatable; open to discussion

dubious

(of a person) feeling doubt

doubtful

equivocal

(of a word) having a double or doubtful meaning

doubtful, uncertain

fallible

(of a person) liable to make errors

able or prone to err

hypothetical

of, based on, a hypothesis (and not proved)

guessed, assumed

improbable

not likely to be true or to happen

not likely

incredible

(almost) impossible to believe (because shocking); very surprising

beyond belief

infamous

wicked; shameful; disgraceful

shameful, bad in reputation

lewd

indecent; showing, having, lust

vulgar, indecent

moot

to raise or bring forward (a subject) for discussion

doubtful, arguable

muzzy

(of a person, thoughts) confused (e.g. because of alcohol)

doubtful, uncertain

notorious

well-known (especially for something bad)

known for a trait

problematic

(especially of a result or future) doubtful

open to doubt

queer

strange; unusual; causing doubt or suspicion; unwell; sick

odd; abnormal

suspect

to have an idea or feeling concerning the possibility or truth of (something); doubtful; possibly not true; a person suspected of doing wrong etc

doubtful

tenuous

thin and weak; (of connections, e.g. between ideas) weak; without much meaning or value

weak, thin

uncertain

not reliable; not certainly knowing or known

doubtful, changeable

unconvincing

not convincing

not convincing

unlikely

not likely to happen or be true

not probable

unreliable

that cannot be relied on; not to be trusted

not trustworthy, not true

unscrupulous

not caring about being honest or doing wrong

immoral

untrustworthy

not trustworthy

not dependable, unfaithful

vague

not clear or distinct; slight; (of a person, expression, behaviour) uncertain, especially about details

not definite or clear

QUESTIONABLE as in Wiktionary
QUESTIONABLE as in Wikipedia