having or containing a lot of knowledge that is known by very few people
erudite
behaving in a kind and pleasant way
affable
changing mood or behaviour suddenly and unexpectedly
capricious
an individual that acts in a hostile manner, such as engaging in combat.
belligerent
likely to do something suddenly, without considering the results of your actions
impetuous
not willing to take part in things// powściągliwy
aloof
believing that people are only interested in themselves and are not sincere:used to say that someone's feelings or emotions are used to your own advantage:
cynical
kind and helpful
benevolent
if you are certain that you are right and that everyone else is wrong.
dogmatic
fond of the company of others; sociable
gregarious
showing no real interest or effort:
indolent