Bubi
laddie
Bub
lad
little boy
Bube
jack
Bubikopf
Eton crop
Qubit
qubit
Azubi
trainee
Rubin
ruby
Habub
haboob
Anubis
Anubis
Kubist
Cubist
Täubin
hen pigeon
Nubien
Nubia
Tubist
tubist
dubios
doubtful
dubious
shady
subito
at once
Bübchen
boy
Pikbube
jack of spades
Jubilar
jubilarian
traubig
racemose
Rubikon
Rubicon