なんか 1. なん（←なに<何>）noun＋かadverbial particle something なんか飲<の>み物<もの>、ない？Do you have something to drink? 2. なんか（←なに＋か）＝なんだか（←なに＋だ＋か）adverb somewhat なんかやる気<き>が出<で>ない。I don't somewhat feel motivated. 3. なんか（←なに＋か）＝など（←なに＋と）adverbial particle （1）exemplification or euphemism 初級<しょきゅう>のテキストには『げんき』や『みんなの日本語<にほんご>』なんかが使<つか>われます。'げんき' and 'みんなの日本語'etc. are used for the text of the beginner's class. これなんかどうですか？How about this (one or something like that)? （2）emphasis (often derogatory) あなたの食<た>べかけなんか要<い>らない。I don't need your half-eaten food (!). あなたなんか知らないっ！I don't know you ! －I'm very angry to / at you ! ※ありがとう.→よろしくおねがいします。I hope you will take care of me.＝Thanking you in advance. To say どうもありがとう is strange because you haven't known whether someone gives you a favor. It might be a correct expression in English. But in Japanese, we don't say "どうもありがとうThank you" before we know someone gives us a favor.

In daily conversation, I say なんか a lot! lol This is similar to 'like' or 'you know' in English which are not necessary to say.(right?) It's kind of bad habit. So, sometimes なんか doesn't have any meaning.