English

Definition of surmise noun from the Oxford Advanced Learner's Dictionary

BrE BrE//ˈsɜːmaɪz//
 
; NAmE NAmE//ˈsɜːrmaɪz//
 
[uncountable, countable, usually singular] (formal) a guess based on some facts that you know already This is pure surmise on my part. He was glad to have his surmise confirmed.
Word Origin late Middle English (in the senses ‘formal allegation’ and ‘allege formally’): from Anglo-Norman French and Old French surmise, feminine past participle of surmettre ‘accuse’, from late Latin supermittere ‘put in afterwards’, from super- ‘over’ + mittere ‘send’.
See the Oxford Advanced American Dictionary entry: surmise

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