limitation has 2 distinct synonyms spread across 3 of its 5 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.
a principle that limits the extent of something
“I am willing to accept certain restrictions on my movements”
the quality of being limited or restricted
“it is a good plan but it has serious limitations”
Synonyms, antonyms and the broader and narrower relations for limitation come from Princeton University’s WordNet. Full sources and licences.
the greatest amount of something that is possible or allowed
“there are limits on the amount you can bet”
(law) a time period after which suits cannot be brought
“statute of limitations”