Synonyms of theory in English:

theory


See definition of theory

noun

1‘I reckon that confirms my theory’

SYNONYMS

hypothesis, thesis, conjecture, supposition, speculation, postulation, postulate, proposition, premise, surmise, assumption, presumption, presupposition, notion, guess, hunch, feeling, suspicion

opinion, view, belief, thinking, thought, thoughts, judgement, contention

2‘the theory of quantum physics’

SYNONYMS

principles, ideas, concepts

principled explanations

laws

philosophy, ideology, system of ideas, science


Phrases

    in theory

      ‘in theory this method is ideal—in practice it is unrealistic’

      SYNONYMS

      in principle, on paper, in the abstract, all things being equal, in an ideal world

      hypothetically

      en principe

      ANTONYMS

      in practice, in reality