Sesquipedalian = που χρησιμοποιεί μεγάλες λέξεις 

She ran a small advertising firm.

interpersonal = He is often aggressive in interpersonal relations.

The conflict over the territory lasted two years.

Philip’s disruptive behavior is attributable to his parents’ divorce.

It’s no use discussing the problem abstractly; we need to implement a practical solution.

This is the most euphoric feeling