Well, I'm a girl, and I would say that some of the best ways to say goodnight to girl depends whether you're saying it to her or texting/messanging her. If messenging her, then don't say it too late, and if saying it to her, then a simple goodnight is all it takes.
Buenas noches, guapo.
Buenas Noches
Que tengas una buena noche.
Goodnight Mom and Dad: bonne nuit maman et papa
"Goodnight".
goodnight!
goodnight
In British English, you can say "goodnight" or "night" as a shorter version.
In Sondhi, you can say "ດີ່ນກັນ" (dien kan) to say goodnight.
Goodnight amica mea
Say Goodnight To The World was created on 2010-08-03.
I Love the Way You Say Goodnight was created in 1951.
In Zulu, you would say "Lala ngoxolo" to wish someone goodnight.
boa noite
because they want to say goodnight?
Subho ratri............But that is beyond formal.....We just say GoodNight in daily conversation.