IPA: /ˈwɜːrldliːər/
KK: /ˈwɜrldliːər/
More experienced and knowledgeable about the practical aspects of life, especially in relation to worldly matters.
After traveling to many countries, she became more worldlier and understood different cultures better.
Worldlier → It is formed from "world" (from Old English *weorold*, meaning the earthly realm or human existence) and "-ly" (meaning in a manner of). The word "worldlier" means in a manner relating to the earthly realm or material existence, often in contrast to spiritual matters.
Think of 'world' as the earthly realm and '-ly' meaning in a manner of — so 'worldlier' describes something that relates to the earthly realm.