Synonyms of theoretical

1 Syllable

pure

2 Syllables

vague, abstract, unreal, grass-roots, grassroots, ideal

3 Syllables

general, transcendent, notional, jesuitic, stochastic, conceptual, codified, quixotic, storybook, logical, assumed, unfleshly, contingent, instanced, unproved, dreamed-up, unearthly, nonviable, presumed, pedantic

4 Syllables

tentative, academic, suprahuman, formalistic, nonmaterial, unphysical, discarnate, transcendental, idealized, ideational, fundamental, impractical, conjectural, unrealistic, substrative, refutable, infeasible, intellectual, postulated

5 Syllables

supermundane, supranatural, unnegotiable, speculative, supramundane, ideological, metaphysical, hypothetical, unsubstantiated, formularized, problematical, suppositional, axiological, analytical, imaginary, philosophical, unserviceable

6 Syllables

imaginative, unbusinesslike