Not all two-letter names work well, yet others do. If it was / is an existing word with a relevant meaning, or an historical classic, and linguistically appealing, then it certainly qualifies. What specifically makes Bo a bonafide given name is that in Scandinavian languages, 'Bo' (lowercase) is the word for "live". Though other flattering factors can render the meaning of a name irrelevant, in this particular case, I love its meaning. It has Zen appeal, and holds a lot of character in its simplicity. It's subtle and bold on a boy; punchy and adorable on a girl. Bo ia among my most favourite names for either a boy or a girl.
It's so cute and fitting on Bo Burnham. I probably wouldn't like it if it wasn't for him. Never met anyone irl with the name.
― Anonymous User 7/12/2021
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My friends and I call each other Bo. I don't know why, exactly. Maybe it's like Beau. "Hey, Bo, what's going on?" This name can also be a term of endearment among friends.
It could be used as a pet name for Bojangles (which is a dumb name by the way), Boris, Bonnie or anything else that starts with BO. Also, some people actually mean "stink" when they say "B.O." Please use Bo as a pet name, not a person name. It also reminds me of Bo Peep, a nursery rhyme character who keeps losing her sheep and cries when she can't find them, she never thinks to look for them.