7 letters · 10 points in Scrabble
adjective fraught with uncertainty or doubt
adjective open to doubt or suspicion; ; ; ; - Karen Horney
adjective not convinced
originEtymology tree Latin dubiusbor. English dubious From Latin dubius; like doubt, from Latin duo (cognate to English two), implying “two alternatives” (yes or no, true or false, etc.).
Etymology from Wiktionary, CC BY-SA 3.0