96372
For clarity: A guy starts speaking in a rude manner to an upperclassman
(unknowingly). so the upperclassman's reply is:

> いきなりタメ口 **って**  
>  一応 同中の先輩なんだけど

Translation:

> Well, that's not very polite!  
>  I'm actually your senpai.
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2022-09-26T10:44:12.943
96368
2022-09-26T14:50:00.633
2022-09-26T14:41:30.047
9831
54551
question
particle-って
Does って in this sentence work as a topic marker or have some other meaning?
This って is a colloquial topic marker that is used in place of
[とは](https://japanese.stackexchange.com/q/25323/5010). とは/って used like this
expresses the speaker's (negative) surprise, bafflement, etc. The senpai used
って because he did not expect タメ口.

Related: [Function of a って at the end of a
sentence?](https://japanese.stackexchange.com/q/86559/5010)
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2022-09-26T14:50:00.633
96372
2022-09-26T14:50:00.633
5010
96368
answer