"über" is the German word for "above" or "over". It does not literally translate as "super" in English, but this is how it is usually translated in compounds.
German meaning "extremely, above, more than..."
As in überlaut - very loud
übercool - extremely cool
PS. the line : " Deutschland, Deutschland über alles.."
dates back to 1841 (lyrics by Hoffmann von Fallersleben ) thus it has nothing to do with Nazi Germany at all
==> The word 'Über' is taken from German and is used in exactly the same way by an Englishslang speaker as a German speaker would. Über in German literally means 'Over' or 'Above' and is often merged with other German words to emphasise their excellence. e.g. "Übersoldat" or "Over-soldier" literally translated. In English, we would sooner say, "Super-soldier", but the meaning is the same.
Other variations:-
µber;
Variant on the spelling of 'Über' with exactly the same meaning only the 'Ü' is replaced with the greek letter 'µ' (Myu).
This is an informal and localised variant and would never be used in formal text.
1) "Aww man, that isn't only Gnarly - that is Über!"
In slang, über is an adjective synonymous with superior, beyond, surpassing, etc. Über retains the meaning from the language it came from, in this case German.
It can be used as an adverb in order to amplify a verb or another adjective's meaning. In may be hyphenated when used in this sense, as shown below.
Günther's über clock can display any desired information in addition to the time.