What is more politer?

[Maniak]

I want to know what is more politer. Suicide or selfmurderer?

[Anglika]

"More polite" or "Politer".

They carry the same weight - neither is more or less "polite" than the other.

[rlfwood]

At least to my colonial ear, "suicide" sounds considerably more gentle than "self-murder." (And this is evidently a distinction that matters to people who think a lot about such things: Suicide is NOT Self-Murder - Suicide.org! )

[harrypurple]

I've never heard the expression 'self-murder' before! It is quite funny. This expression would only be used self-consciously or for comic effect surely. Just use 'suicide' - the proper word for killing yourself. To say 'he committed suicide' is perfectly polite, proper English.