knowing and performing (one's) duty, one who renders to everyone his due, knowing what is right, pious, grateful

unjust, ungrateful, unjust or ungrateful person

not acquainted with truth, undutiful, ungrateful

knowing, acquainted with, intelligence, explanation, notification, identity, knowledge

one who knows the worth of

rightful got his due

intelligent, sharp-minded

one who appreciates loyalty, faithfulness, sincerity

duty-conscious

diplomat, opportunist, tactful

grateful, thankful, obliged, oblige

physiognomist, scientist of physiognomy

one who recognizes human worth

one who understands signs and gestures

acquainted with river, swimmer

acquainted with humanity, the one who know the human nature, the one who knows the good and bad nature of human, the one who appreciating the good guy

the one who know the people, the one who have knowledge about people behavior and character

palmist, astrologer

an opportunist

who feels the pulse, a knower

A philologist, lexicographer,linguistics.

one who recognizes signs, understands hints, knower of secrets

the one who well acquainted with the nature of the woman, the one who is aware about qualities of a woman

godly, pious, god knowing, mystic, one who recognizes the God

a person who knows his/her aim or destination, the one who know about difficulties, the one who reaches reality

(about art and education) consciousness, percipient

self-aware, enlightened

one who is not acquainted with vale or worth

usurp a right

(one) who forgets others' rights

one who can sense truth

one who knows an epoch, age

connoisseur