terminal has 7 distinct synonyms spread across 4 of its 9 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 intermediate.
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.
being or situated at an end
“the endmost pillar”
occurring at or forming an end or termination
“his concluding words came as a surprise”
station where transport vehicles load or unload passengers or goods
a contact on an electrical device (such as a battery) at which electric current enters or leaves
electronic equipment consisting of a device providing access to a computer; has a keyboard and display
3 of the 9 recorded senses carry no synonym, antonym or related term, so they are not shown above. Every sense, with its definition and examples, is on the full entry for terminal.
Synonyms, antonyms and the broader and narrower relations for terminal come from Princeton University’s WordNet. Full sources and licences.