reality has 3 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 unreality.
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.
all of your experiences that determine how things appear to you
“his world was shattered”
the state of being actual or real
“the reality of his situation slowly dawned on him”
Synonyms, antonyms and the broader and narrower relations for reality come from Princeton University’s WordNet. Full sources and licences.
the state of the world as it really is rather than as you might want it to be
“businessmen have to face harsh realities”
the quality possessed by something that is real