Inconcludive
An 11 letter word having to do with sex is fornication.
"Perspective" is an 11-letter word that means point of view.
inquisitive
The word is conciliator. It means a peacemaker.
An 11 letter word that means "to invade someone's privacy" is "trespassing".
quarrelsome
accommodate
fashionista
exquisitely or masterpiece
inteligente. It literally means intelligent in english.
The 11-letter word that means elimination is "extermination." It refers to the act of completely destroying or getting rid of something, often used in the context of pests or undesirable elements.
Magnificent. I think this is what you are looking for.