Synonyms and Antonyms of suppositional
existing only as an assumption or speculation
- Concepts regarding the origin and structure of the universe must perforce be suppositional.
alleged, assumed, presumed, presupposed, proposed, supposed, unproved, unproven, untested
abstract, conceptual, intellectual, metaphysical
concrete, defined, definite, distinct
attested, authenticated, confirmed, demonstrated, established, proven, substantiated, tested, time-tested, validated, verified
empirical (also empiric), nonspeculative, nontheoretical, observational