The term "in dubitable" refers to something that is beyond doubt or unquestionable. The opposite of this term, the antonym, is "dubious." This term refers to something that is uncertain, questionable, or doubtful. For instance, a dubious claim is one that is not entirely believable or lacks evidence. Other antonyms for in dubitable include contestable, disputable, and questionable. These terms are used to describe something that can be challenged or argued. Antonyms such as fallacious, false, and inaccurate may also be used to describe something that is not true or incorrect. These antonyms are essential to use in a bid to describe things more accurately.