an opportunist

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

one who knows the worth of

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

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

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

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

the one who recognize the condition, nature conscious

self-aware, enlightened

one who is not acquainted with vale or worth

one who knows an epoch, age

connoisseur

able to read, knowing the letters, beginner

constancy of unacquainted, faithless, inconsiderate, treacherous

fortune-teller, astrologer, soothsayer

look all around, scan

an astronomer, astrologer, almanac-maker

eyes to meet, come across, exchange amorous glances with someone, fall in love

eye sight to improve

gawk at, stare, set eyes upon

take someone's fancy