The correct spelling of the phrase "had one doubts" is actually "had any doubts". The confusion may stem from the similarity in pronunciation of "one" and "any"; however, the correct word to use in this context is "any". The IPA transcription for "had any doubts" would be /hæd ˈɛni daʊts/, with stress on the second syllable of "any" and on the first syllable of "doubts".
"Had one doubts" is not a standard or commonly used phrase in the English language. It appears to be a combination of words that do not form a coherent phrase or expression. "Had" is the past tense of the verb "have" and is used to indicate possession, experience or states in the past. "One" is a pronoun used to refer to a person in a general or non-specific sense. "Doubts" refers to feelings of uncertainty, lack of conviction or skepticism about something.
Individually, "had," "one," and "doubts" have different meanings and uses, but when combined, they do not create a commonly used or recognized phrase. It is possible that you may have intended to ask for a definition of "having doubts" or "had doubts." "Having doubts" means to feel uncertain or skeptical about a particular matter, while "had doubts" would indicate that someone had experienced uncertainty or skepticism in the past.
Without further context or clarification, it is difficult to provide an accurate or meaningful definition for "had one doubts."