Meaning of THEORY in English

THEORY

noun

1.

a belief, policy, or procedure proposed or followed as the basis of action

an educational system that was based on the theory that men learn best by experience

Synonyms: hypothesis, supposal; compare assumption 2

Related Word: base, basis, grounds, position, premise, understanding

Antonyms: practice

2.

something taken for granted especially on trivial or inadequate grounds

her theory that the house was haunted

Synonyms: conjecture, perhaps, speculation, suppose, supposition

Related Word: guess, guesswork, surmise; feeling, hunch, impression, presentiment, suspicion

Contrasted words: assurance, certainty, knowledge

Merriam Webster. Collegiate thesaurus English vocabulary.      Английский энциклопедический словарь тезаурус.