GNU Collaborative International Dictionary of English

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1.       
   Opine (?), v. t. & i. [imp. & p. p. Opined (?); p. pr. & vb. n. Opining.] [L. opinari, p. p. opinatus; akin to opinus (in comp.) thinking, and perh. to E. apt: cf. F. opiner.] To have an opinion; to judge; to think; to suppose.  South.
   
   [1913 Webster]