Posh and Self-indulgent

Posh adjective - Elegant and fashionable.

Self-indulgent and posh are semantically related. In some cases you can use "Self-indulgent" instead an adjective "Posh".

Self-indulgent adjective - Given to or marked by excessive gratification of one's desires.

Posh and self-indulgent are semantically related. Sometimes you can use "Posh" instead an adjective phrase "Self-indulgent".