MtoM said:
You are right it is (misoko) so what does (ore o misoko nau na) means? and what is this (nau) word ?
As epigene suggested, this is
not a combination of "misoko" and "nau." It's a compound verb comprised of the root of "mi(ru)" ("see") and "sokonau" (injure, harm), although (again, as epigene said) it'd probably be best for you to think of it as a single verb. At any rate, compound verbs like this are quite common in Japanese, so you should get used to seeing them.
epigene said:
MtoM said:
SO what do you say to tell someone not to cause you to lose faith on him
Well, in that case you can say:
Watashi (or boku, ore, etc.) o shinjite! (Believe me.)
Watashi o shinrai shite! (Trust me.)
This isn't exactly what he's asking for. He doesn't want to know how to tell a person "trust me!" or "believe in me", but rather, he's saying that _he_ (the speaker) trusts this other person, and he wants to tell him not to do anything that will betray that trust.
Something like 「俺の信頼を裏切るようなことはするな」, except that I'm sure that you could come up with a better example than that, this being a case where my non-native-speaker's intuition (or lack thereof) is failing me.
I'm not sure you can do this using the verb 「見損なう」. It seems you should technically be able to say 「見損なわせるな」 (causative) to mean "Don't make me lose faith in you", but a quick search on Google seems to suggest that no one says this (whereas, for example, 「笑わせるな」 to mean "Don't make me laugh" is quite common -- maybe it has something to do with 見損なう being a transitive verb and 笑う being intransitive?)