"doubtful" does not have a prefix. It does, however, have a suffix ('-ful').
The word has no prefix. Not every word has a prefix. It comes from the Latin, dubius, which means doubt.
The prefix of doubtful is "doubt-".
The prefix for doubtful is "un-."
The root word of doubtful is "doubt."
You can use the word "doubtful" to express uncertainty or skepticism about something. For example, "It is doubtful that we will finish the project on time," or "She gave a doubtful look at the new proposal."
Dubious means hesitating or doubtful, questionable in terms of validity or truth.
Doubtful is an adjective; it describes something that is in doubt (noun) or something you doubt (verb). Example uses: Adjective: The doubtful weather makes it difficult to decide if we should go today. Noun: My doubt about his ability was proven wrong by his results. Verb: We don't have much cake left, I doubt there is enough to serve guests. You can tell it is not a verb because it is impossible to put the preposition "to" in front of it in order to create an infinitive verb, i.e. "to doubtful", or to use it in a sentence such as "I doubtful something". It also cannot be a noun because you cannot put "the" or "a" in front of it and use it in a sentence like "I see the doubtful" or "Can I have a doubtful?" "Doubtful", as an adjective, means that it can be used either as an attribute, describing something ("The painting was of doubtful origin") or as a predicate adjective which usually appears alone after a verb ("I am doubtful" or "she is feeling doubtful"). "Doubtful" is probably most commonly used in this second way, as a predicate adjective. As an attribute, other words such as "dubious" (which is related to the word "doubt") are more often used.
The prefix for doubtful is "un-."
More doubtful, most doubtful moister, moistest
more doubtful, most doubtful more wooden, most wooden
« Can I answer this question ? » wondered the contributor, in a doubtful manner.
I am sure that Michael is doubtful of this.
The root word of doubtful is "doubt."
An evil man is always doubtful. Without a doubt, Wikianswers is the best question and answer site.
You can use the word "doubtful" to express uncertainty or skepticism about something. For example, "It is doubtful that we will finish the project on time," or "She gave a doubtful look at the new proposal."
A doubtful Digit is the space between the lines of a measuring tool
Doubtful Sound got it's name from Captain Cook. Doubtful Sound got it's name from Captain Cook.
Doubtful. Real doubtful.
Doubtful Doubtful