conjugation

[Paeleben]

C'est le diminutif pour "I don't know" je crois... Après, je ne suis pas un expert mais il me semble que l'on peut utiliser "I dunno" sur MSN par exemple. 

[mamour]

ok 

[Alfast]

It's very strange but I prefere "I don't know"

[Paeleben]

It's not strange at all because when you pronounce "I don't know", you say "i dunno" if youare used to spell it quickly. 

[Thomas]

Yeah "I dunno" is something for MSN or emails or other informal things, don't write it in a paper or anything You hear both "I dunno" and "I don't know" all the time, it just depends on the way the sentence is going, I suppose. Kind of like "Je ne sais pas" vs "Je sais pas" vs what I believe sounds like "chez pas"

In fact, however, online you will often see (on MSN or other chat programs) the abbreviation idk used to mean "I don't know" -- it's even shorter than "I dunno". And you also just see the word "dunno"

ReallyAwesomeName110202: hey what time is the movie playing?
NotNearlyAsCoolOfAName444022: i don't know/i dunno/dunno/idk

Then of course you have tons of expressions like "no idea" or "not a clue", etc., which all have the same general meaning but are of course slightly different in literal meaning.