intermediate has 6 distinct synonyms spread across 2 of its 4 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 terminal.
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.
lying between two extremes in time or space or state
“going from sitting to standing without intermediate pushes with the hands”
a substance formed during a chemical process before the desired product is obtained
Synonyms, antonyms and the broader and narrower relations for intermediate come from Princeton University’s WordNet. Full sources and licences.