1 abyssal, bottomless, broad, far, profound, unfathomable, wide, yawning.2 abstract, abstruse, arcane, esoteric, hidden, mysterious, obscure, recondite, secret.3 acute, discerning, learned, penetrating, sagacious, wise.4 artful, astute, canny, cunning, designing, devious, insidious, knowing, scheming, shrewd.

How do you say deep conversation?

How To Have Deep Conversations (With Examples)
Start with small talk and gradually go deeper. Choose relaxed, intimate environments. Bring up a deep subject that interests you. Find like-minded people. Ask a personal question about the subject. Share something about yourself. Ask follow-up questions.

What does in depth conversation mean?

adj carefully worked out, detailed and thorough.

serious talk synonym | English Thesaurus
1 grave, humourless, long-faced, pensive, sedate, sober, solemn, stern, thoughtful, unsmiling.2 deliberate, determined, earnest, genuine, honest, in earnest, resolute, resolved, sincere.