I don't quite understand this (# 13):
Ansonsten gibt es "ey Alter" auch als Interjektion zur Bekräftigung, was sich auch gar nicht auf einen Person bezieht - das ales natülich im Unterschied zu "dude".Can you give an example? Are you perceiving "dude" merely as a form of address, calling the other – presumably male – person's attention to your comments? "Dude" has many uses, especially but not always depending on intonation and whether said as an exclamation, statement, or particle, and at least in California no longer – for, like,
decades! – dependent on sex.
Here's a start:
http://www.livescience.com/strangenews/dude_l..."(...) the four-letter word has many uses: in greetings ('What's up, dude?'); as an exclamation ('Whoa, Dude!'); commiseration ('Dude, I'm so sorry.'); to one-up someone ('That's so lame, dude.'); as well as agreement, surprise and disgust ('Dude.')."
The latter ("agreement, surprise and disgust") may be of interest to you. Consider:
A. So then she shows up at the cafeteria – in her bathrobe!
B. (Shakes head.) Dude.
A. Did you hear they're raising bus fares again?
B. (Gesture of annoyance.) Dude!
In both places I think you'd be more likely to use "Mann" in German.
I'm familiar with "Alte/Alter" used at least as a form of address in about the same way and at about the same register as "dude" ("dude, you have no idea"; "how's it goin', dude?") and would support Mausling's proposal in # 9. That covers at least the main use of "dude."