bystry spostrzegawczy in English:

He's very perceptive about people's relationships.

Kathleen is a very perceptive woman. She understands situations immediately and knows how others might be feeling.

A really perceptive person can figure out a whole situation with just a few clues. That's the kind of person I want you to become.

You are really intelligent and perceptive

a perceptive person, a perceptive comment, a perceptive remark

She is obviously very perceptive. She knew exactly what we were talking about and made a few comments that nobody else would have thought of.

You’re right. That’s very perceptive of you.

the ‘perceptive’ person is one who can read the non-verbal sentences and accurately match them against the person's verbal sentences.

You must be perceptive when you want to invest. A perceptive choice is very important.

Too much alcohol paralyzes our perceptive powers.