One Word Substitution
A speech without preparation - Extempore
Murder of a king - Regicide
Murder of father - Patricide
One who see dark side of things - Pessimist
One who see bright side of things - Optimist
A person having many skills - Versatile
Murder of mother - Matricide
Murder of One's brother - Fratricide
Murder of sister - Sororcide
Killing of wife - Uxoricide