English translation	Literal translation	Sindarin translation
[understood word] [inf]=[informal] [f]=[formal]
Are you insane?	are [inf] you without inner-meaning/logic?	Ce pen-ind?
Are you stupid?	are [inf] you without intelligence?	Ce pe-chennas?
Idiot!	Lacking intelligence	Pe-channas!
You are a dirty orc	[inf] You are a dirty orc	Ce orch 'waur
You are dirty orcs	[f] You are dirty orcs	Le yrch 'woer
You are insane	[inf] you are without inner-meaning or logic	Ce pen-ind
You look like a monster	[inf] you appear [to be] a monster	Thiach úan
You smell like a monster	[inf] you stink like a monster	Thostach sui úan
Your head is empty	[inf] your head is empty	Dôl gîn lost
Your mother looks like a monster	[inf] your mother appears [to be] a monster	Naneth gîn thia úan