The concept of kreng jai (consideration for others' feelings) shapes much of Thai social interaction — what it means and how it shows up.
A deep reluctance to impose on, inconvenience, or cause loss of face to another person — even at the cost of one's own convenience or directness.
Thais may avoid saying no directly, agree to plans they're unable to keep rather than decline, or avoid pointing out someone's mistake publicly — all rooted in kreng jai.
Understanding kreng jai explains many interactions that can seem confusing — an enthusiastic 'yes' that doesn't materialise, or reluctance to give direct feedback, often reflects this value rather than dishonesty.
Giving people an easy way to decline (asking 'would it be convenient?' rather than a direct request) tends to get more honest responses than direct Western-style questions.
Hotel and restaurant staff going out of their way to avoid disappointing a guest, even at their own inconvenience, is one of the clearest everyday expressions of kreng jai a visitor is likely to encounter.