doubtful

Feeling uncertain about something or not convinced; also used to describe something unlikely to happen or be true.

ruИспытывающий неуверенность в чём-либо или не убеждённый; также используется для описания чего-то маловероятного или сомнительного.esQue siente incertidumbre o no está convencido de algo; también se usa para describir algo poco probable o que inspira duda.frQui éprouve de l'incertitude ou n'est pas convaincu ; également utilisé pour décrire quelque chose de peu probable ou de suspect.deUnsicher oder nicht überzeugt; wird auch verwendet, um etwas Unwahrscheinliches oder Fragwürdiges zu beschreiben.ptQue sente incerteza ou desconfiança em relação a algo; também usado para descrever algo improvável ou de que se duvida.zh对某事感到不确定或没有把握；也用于形容某事不太可能发生或可疑。arصفة تعني الشك أو عدم اليقين في شيء ما، أو عدم الاقتناع به؛ وتُستخدم أيضاً لوصف أمر غير مرجح الحدوث أو مشكوك فيه.

1. Uncertain or not sure B1 formal

   Feeling uncertain about something or not convinced.

   • I am doubtful about the success of this plan.
   • She was doubtful whether he would arrive on time.
   • The outcome of the negotiations remains doubtful.

   ruСомнительныйesdudoso, inciertofrincertain, qui doutedeZweifelndptDuvidosozh怀疑的arمرتاب

   Synonymes: distrustfuldubiousquestioningsuspiciousuncertainunsure

   Antonymes: certainconfidentconvincedpositivesure

2. Unlikely or improbable B1 formal

   Not likely to happen or be true.

   • It is doubtful that they will finish the project by Friday.
   • His chances of winning the lottery are doubtful.
   • The weather forecast is doubtful for the weekend.

   ruСомнительныйesdudoso, improbablefrpeu probabledeunwahrscheinlichptImprovávelzh不大可能arغير محتمل

   Synonymes: dubiousimprobablequestionableuncertainunlikely

   Antonymes: certainindubitablelikelyprobablesureunquestionable

3. Questionable or suspicious B2 formal

   Not trustworthy or reliable; causing suspicion.

   • The company's financial records are doubtful.
   • His motives for helping were doubtful.
   • The evidence presented in court was highly doubtful.

   ruСомнительныйesDudoso, sospechosofrSuspect, douteuxdeFragwürdigptDuvidosozh可疑的arمشكوك فيه

   Synonymes: dubiousfishyquestionableshadysuspectsuspiciousunreliableuntrustworthy

   Antonymes: certaincredibleindubitablereliablesuretrustworthyunquestionable

• more doubtful comparative form
• most doubtful superlative form