1 : dependent on chance; "the aleatory element in life"
2 : not secure; beset with difficulties; "a shaky marriage"
3 : fraught with uncertainty or doubt; "they were doubtful that the cord would hold"; "it was doubtful whether she would be admitted"; "dubious about agreeing to go"
4 : open to doubt or suspicion; "the candidate's doubtful past"; "he has a dubious record indeed"; "what one found uncertain the other found dubious or downright false"; "it was more than dubitable whether the friend was as influential as she thought"- Karen Horney
adjectif
1 : lacking any definite plan or order or purpose; governed by or depending on chance
