Словарь синонимов английского языка - doubtful

(adj) 1. in doubt, dubious, questionable, open to question, problematic, debatable, disputable, uncertain, unpredictable, indeterminate, unsettled, unresolved, conjectural, indefinide, unclear, obscure, vague, anybody's guess , Colloq up in the air: The result is very doubdful. 2. sceptical, unconvinced, distrustful, mistrustful, suspicious, uncertain, unsure, hesitant, hesitating, vacillating, indecisive: I am doubtful whether an investigation will yield anything. 3. dubious, questionable, shady, louche, disreputable, controversial: Those are people of doubtful reputation.