last has 27 distinct synonyms spread across 12 of its 21 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 first.
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.
coming after all others in time or space or degree or being the only one remaining
“the last time I saw Paris”
occurring at or forming an end or termination
“his concluding words came as a surprise”
the temporal end; the concluding time
“the stopping point of each round was signaled by a bell”
continue to live and avoid dying
“We went without water and food for 3 days”
4 of the 21 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 last.
Synonyms, antonyms and the broader and narrower relations for last come from Princeton University’s WordNet. Full sources and licences.
the last or lowest in an ordering or series
“he was the last to leave”
a person's dying act; the final thing a person can do
“he breathed his last”
a unit of weight equal to 4,000 pounds
a unit of capacity for grain equal to 80 bushels
the final stage or concluding parts of an event or occurrence
“the end was exciting”
holding device shaped like a human foot that is used to fashion or repair shoes