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English doubt
Old English twēoġan (mention)
English b (mention)
Middle English douten (inherited)
Middle English dout (inherited)
Middle English doute (mention)
French douter (cognate)
Middle French doubter (cognate)
Middle French doubter (cognate)
Old French douter (derived)
Old French doter (mention)
Old French duter (mention)
Old French doute (derived)
Old French dote (mention)
Old French dute (mention)
Old French doter (mention)
Old French douter (mention)
Old French duter (mention)
Proto-Indo-European *gʰeh₁bʰ- (root)
Proto-Indo-European *dwóh₁ (derived)
Proto-Indo-European *gʰeh₁bʰ- (derived)
Latin dubitāre (derived)
Latin dubitō (mention)
Latin dubius (mention)
Latin duhibius (mention)
Latin duo (mention)
Latin habeō (mention)

English b (mention)
English dubious (mention)
English doubtful (suffix)
English doubtless (suffix)
English redoubt (mention)
English redoubt (prefix)
English dout (mention)
English dubitate (doublet)
English doubter (affix)
English self-doubt (prefix)
English doubtable (suffix)
English misdoubt (prefix)
English doubtworthy (suffix)
English bedoubt (prefix)
English doubtsome (suffix)
English doubteth (suffix)
English doubtest (suffix)
English doubtee (suffix)
English doubthouse (affix)
Afrikaans twyfel (link)
Esperanto dubi (cognate)
Irish dabht (borrowed)
Manx dooyt (borrowed)
Norwegian Bokmål tvil (link)
Dutch twijfel (link)