In modern day,
it is used as a name for males who are of extraordinary intelligence,talent,have the most supreme oratory skills and possess an unusual and impeccable amount of wisdom from birth contrary to mortals.
Such males are considered to be the epitome of male-hood and are considered to be the most supreme men ,the King of Kings or "Purushottam".
They are blessed with perfect looks .
All women want to be with them and all men want to be like them.
The name is often used as an adjective and verb.
Hey lady! if I'm gonna do this I'm gonna do this kartikeya-ly!
I wish my boyfriend was as Kartikeya as you :(