The Oxford Thesaurus An A-Z Dictionary of Synonyms INTRO ...

theorem n. 1 hypothesis, proposition, assumption, conjecture, thesis,
postulate: He has set forth a clever proof of the binomial
theorem. 2 statement, dictum, rule, deduction, formula, axiom,
principle: After a lifetime of experience, his theorem is that
honesty is the best policy.
theoretical
adj. 1 hypothetical, conjectural, speculative, untested,
unproved, unproven, moot, putative, debatable, supposititious,
suppositional: The theoretical trajectory will take it beyond
Uranus. 2 impractical, unrealistic, pure, ideal, abstract,
academic: The suggestion was purely theoretical, since we have
no means of carrying it out.
theorist n. theoretician, speculator, hypothecator, hypothesizer,
theorizer, philosopher, dreamer: Leave guesswork to the
theorists: we need hard facts.
theorize v. guess, hypothesize, conjecture, speculate: It is logically
illogical to theorize about articles of faith.
therapeutic
adj. therapeutical, healing, curative, remedial, restorative,
salutary, health-giving, healthy, beneficial, corrective,
salubrious, medical, medicinal: Primitive medicine men knew of
the therapeutic powers of these herbs.
therapist n. psychotherapist, psychologist, analyst, therapeutist,
psychiatrist, psychoanalyst, counsellor, advisor, Colloq shrink:
For some problems it is best to seek the advice of a trained
counsellor or therapist.
therapy n. 1 remedy, treatment, remedial programme; cure: As therapy,
he suggested I swim a mile every day. 2 psychotherapy,
psychoanalysis, analysis, group therapy: If it weren't for my
weekly therapy sessions, I'd never see anyone.
therefore adv. consequently, so, thus, as a result or consequence, hence,
ergo, for that reason, wherefore, accordingly, that being so or
the case: Demand for our products has fallen dramatically, and
we cannot therefore expect to make a profit this year.