What is another word for one one?
Pronunciation: [wˈɒn wˌɒn] (IPA) 
One one, also referred to as "one by one," has a variety of synonyms that can be used interchangeably. Some of the most common synonyms for this phrase include singly, individually, separately, personally, and distinctly. "Singly" is often used when referring to items or people being done or taken individually. "Individually" is similar in meaning and can be used when talking about tasks being completed by one person at a time. "Separately" can be used to specify that things are being considered or done apart from each other. "Personally" implies a more intimate or hands-on approach, while "distinctly" suggests something that is unique or separate from a larger group.
