Reverse Dictionary: DOUBT

ADJECTIVES
1330 ► DOUBTOUS → DOUTOUS doubtful; of uncertain existence, meaning, or issue → obs.
1380 ► DOUBTY doubtful; dubious; hazardous → obs.
1393 ► DOUBTIVE doubtful, in doubt or fear → obs.
1470 ► UNCERTAINED doubting, uncertain → obs.
1486 ► APOCRYPHATE of doubtful authenticity; fictitious, false → obs.
1522 ► DOUBTSOME doubtful → Sc. & Eng. dial.
1601 ► JEALOUS doubtful, mistrustful → obs.
1612 ► LEFT-HANDED doubtful, ambiguous, questionable 
1624 ► DUBITABLE doubtful, uncertain; open to doubt or question; capable of being doubted 
1644 ► AMPHIBOLOUS of doubtful character, ambiguous → obs.
1652 ► ANCIPITOUS doubtful, uncertain; ambiguous → obs.
1656 ► AMBILOQUENT speaking doubtfully or ambiguously → obs.
1719 ► APOCRYPHICAL of doubtful authorship or authenticity; spurious, fictitious, false → obs.
1720 ► QUISQUIS doubtful, perplexing, debateful, dubious → Sc. obs.
1720 ► QUISQUOSE doubtful, perplexing, debateful, dubious → Sc.
1727 ► DUBITATIVE inclined or given to doubt; expressing doubt or hesitancy 
1818 ► DUBEROUS doubtful, dubious, uncertain, suspicious → Eng. & Amer. dial.
1821 ► DUBITANT doubting, having doubts 
1837 ► DUBERSOME doubtful, dubious 
1851 ► DICKY doubtful, uncertain, critical, hazardous 
1862 ► BETWEEN TWO MINDS in doubt or suspense; undecided → Ireland & Sc.
1866 ► AIVALOUS → AIVILOUS doubtful, uncertain → Sc. (Bk.)
1866 ► AIVING being in doubt → Sc. (Bk.)
1871 ► JUBEROUS doubtful, dubious → Amer. dial.
1874 ► EYVY-KEYVY → HAVEY-CAVEY → HEAVY-CEAVY → HEIGHVY-KEIGHVY → HEIVY-KEIVY doubtful, uncertain, undetermined, wavering, precarious → Eng. dial.
1875 ► AVOIRDUPOIS → HAVERDEPAISE in doubt, undecided, wavering in one’s mind → Eng. dial.
1880 ► TITUBANT doubting, uncertain, hesitating, wavering 
1892 ► SHIKERRY doubtful, shabby, bad, shaky → Aust. sl. (Bk.)
20C.. ► UP IN THE AIR doubting, speculative, hypothetical → sl.
1900 ► DARK doubtful, uncertain; unknown → Eng. dial. (Bk.)
1902 ► ON THE HAVEY-QUAVEY doubting and questioning → Eng. dial. (Bk.)
1903 ► CHANCY doubtful, uncertain → Amer. dial.
1905 ► ONELY-SIDED doubtful, peculiar → Eng. dial. (Bk.)
1905 ► UNDOOTFA doubtful → Eng. dial. (Bk.)
1913 ► DUBROUS doubtful, dubious, dangerous → Amer. dial. (Bk.)
1913 ► JUBERSOME doubtful, dubious → Amer. dial. (Bk.)

ADVERBS
1615 ► DUBITATIVELY in a doubting manner; doubtingly 
1710 ► PYRRHONICALLY doubtfully, sceptically 
1864 ► DUBITABLY in a doubting manner 

INTERECTIONS & PHRASES
1568 ► UMPH! an exclamation of doubt, wonder, disappointment, sympathy, or remonstrance 
L19.. ► I BELIEVE YOU BUT THOUSANDS WOULDN’T used to express doubt, or, at best, reserve judgement about the veracity of the person being addressed → UK
1982 ► I AM SO SURE! used to express strong doubt about what has just been said → US sl.

NOUNS
1297 ► BALANCE doubt, hesitation, wavering; subjective uncertainty → obs.
1325 ► DOUBTANCE doubt, uncertainty, hesitation → obs.
1440 ► DWERE doubt, dread → obs.
1450 ► DUBITATION doubt, uncertainty; hesitation 
1471 ► VARIATION doubt, uncertainty → obs.
1532 ► MAMMERING a state of doubt, hesitation, or perplexity → obs.
1578 ► MAMMERY a state of doubt, hesitation, or perplexity; vacillation → obs.
1603 ► PYRRHONISM philosophic doubt, scepticism 
1623 ► HESITUDE doubtfulness, hesitancy → obs.
1624 ► UMBRAGE a feeling of doubt or suspicion → obs.
1631 ► ADDUBITATION the suggestion of a doubt; insinuated doubt → obs.
1646 ► DUBIOSITIES a doubtful matter 
1649 ► DUBITANCY doubt, hesitation, uncertainty of opinion → obs.
1750 ► DUBIETY doubtfulness, dubiousness 
19C.. ► ANTRIMS doubts, hesitations → Eng. dial.
1823 ► MISDOUBT a doubt; mistrust; suspicion → Sc. & Eng. dial.  
1859 ► DUBIOSITY doubtfulness; uncertainty, ambiguity 
1862 ► HANKER doubt, hesitation, regret → Eng. dial.
1905 ► MIDGE-GO-MORRAH doubt, hesitation, excuse → Eng. dial. (Bk.)
1923 ► CHANCE doubt → Amer. dial.

NOUNS, PERSON
1678 ► IMPUGNATOR a person who raises doubts; one who blames → obs.
1820 ► HAWER a person who doubts or ‘haws’; one who speaks hesitatingly or stammers 
1821 ► DUBITANT a person who doubts 

VERBS
..897 ► TWEON to be doubtful; to doubt; to debate → obs.
1350 ► MAMMER to be in doubt; to hesitate → Eng. dial.
1534 ► CALL IN QUESTION to cast doubt on, to dispute 
1555 ► HANG IN THE WIND to be doubtful, undecided; to be irresolute, to vacillate 
1578 ► FEAR to doubt, to regard with distrust → obs.
1603 ► PYRRHONIZE to doubt; to be sceptical 
1623 ► INDUBITATE to doubt nothing at all → obs.
1646 ► INDUBITATE to render doubtful or uncertain; to call in question → obs.
1678 ► DIFFIDE to doubt, to distrust, to suspect, to mistrust → obs.
1709 ► MAKE DOUBT to doubt, to be uncertain → obs.
1816 ► MISLIPPEN to doubt, to distrust; to suspect → Sc. & Eng. dial.
1837 ► DUBITATE to doubt, to hesitate, to waver 
1877 ► MISDOUBT to doubt, to suspect; to fear, to apprehend; to think; to having an inkling or suspicion of → Sc. & Eng. dial.  
1882 ► MISBELIEVE to doubt, to disbelieve → Sc. & Eng. dial.  
1898 ► AVOIRDUPOIS to be in doubt; to consider, to weigh mentally → Eng. dial. (Bk.)
1902 ► HAVE BAD HEART OF to be doubtful of, to have little hopes of → Eng. dial. (Bk.)
1903 ► MISGIVE to doubt, to have a misgiving → Eng. dial. (Bk.) 
1908 ► VAREEZ to be doubtful, to hesitate → Sc.
1911 ► BRANGLE to throw into doubt; to cast doubt upon → Sc. (Bk.)
1965 ► UNDERLOOK to look at someone with grave doubt → Barbados sl.