unworldly has 1 distinct synonym spread across 1 of its 2 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is worldly.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
not concerned with the temporal world or swayed by mundane considerations
“was unworldly and did not greatly miss worldly rewards”
not wise in the ways of the world
“either too unsophisticated or too honest to promise more than he could deliver”
Synonyms, antonyms and the broader and narrower relations for unworldly come from Princeton University’s WordNet. Full sources and licences.