[1] : The Collaborative International Dictionary of English v.0.48

opine \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
see also:
opined opining 

[2] : WordNet (r) 2.0

opine
     v 1: speak one's opinion without fear or hesitation; "john spoke
          up at the meeting" syn: speak up, animadvert, sound
          off
     2: expect, believe, or suppose; "i imagine she earned a lot of
        money with her new novel"; "i thought to find her in a bad
        state"; "he didn't think to find her in the kitchen"; "i
        guess she is angry at me for standing her up" syn: think,
         suppose, imagine, reckon, guess
see also:
speak up animadvert sound off think suppose imagine 
reckon guess 

[3] : Moby Thesaurus II by Grady Ward, 1.0

86 moby thesaurus words for "opine":
   account, account as, adjudge, adjudicate, allow, allude to, assume,
   be afraid, be judicious, believe, blurt, blurt out,
   call attention to, comment, conceive, conclude, consider, count,
   daresay, deduce, deem, divine, dream, esteem, estimate, exclaim,
   exercise judgment, expect, express an opinion, fancy, feel,
   form an opinion, gather, grant, guess, have a hunch, have an idea,
   have an impression, have an inkling, have the idea, hold, hold as,
   imagine, infer, interject, judge, let, let be, let drop, let fall,
   look upon as, maintain, make reference to, mention, muse, note,
   observe, pine, prefigure, presume, presuppose, presurmise,
   provisionally accept, reckon, refer to, reflect, regard, remark,
   repute, say, set down as, speak, suppose, surmise, suspect, take,
   take for, take for granted, take it, take to be, think, think of,
   trow, understand, view as, ween

Opine >> O Words
Opine, definition of term: Opine
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