theorise.
Non-Oxford British English standard spelling of theorize, particularly
Meaning & usage
Non-Oxford British English standard spelling of theorize, particularly
Non-Oxford British English standard spelling of theorize to theorize (to formulate a theory, especially about some specific subject)
Where this word comes from
Etymology tree Proto-Hellenic *tʰáwā Ancient Greek θέᾱ (théā) Proto-Indo-European *wer-der. Proto-Indo-European *h₃ekʷ-der. Proto-Indo-European *weyd-der. Ancient Greek ὁράω (horáō) Ancient Greek *θεᾱ-(ϝ)ορός, *θεη-(ϝ)ορός (*theā-(w)orós, *theē-(w)orós) Ancient Greek θεωρός (theōrós) Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-i-eh₂ Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek θεωρία (theōría)bor. Late Latin theōrialbor. Middle French théoriebor. English theory English -ise English theorise From theory + -ise.
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Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.