terrene has 4 distinct synonyms spread across 2 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. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
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.
of or relating to or inhabiting the land as opposed to the sea or air
belonging to this earth or world; not ideal or heavenly
“not a fairy palace; yet a mundane wonder of unimagined kind”
Synonyms, antonyms and the broader and narrower relations for terrene come from Princeton University’s WordNet. Full sources and licences.