Something that isn't superficial but very great and intense

I couldn’t care less (but one must keep up appearances, right?)

1)to be deep/insightful

2)hard to grasp/understand to the shallow mind or someone of ordinary knowledge.

Commonly used sarcastically in response to blatantly obvious phrases.

A derogatory term used to describe people who consider themselves as being part of an intellectual or cultural elite. This phenomenon tends to manifest itself in the narcissistic manner such people dress and speak; as well as in their affectedly highbrow artistic and associational preferences.

In statistics, when a hypothesis test produces a pvalue between .001 and .002, a rejection on the null hypothesis must be declared as a ‘profound rejection’.