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n.
a judgment of the qualities of something or somebody; "many factors are involved in any estimate of human life"; "in my estimation the boy is innocent"
n.
a vague idea in which some confidence is placed; "his impression of her was favorable"; "what are your feelings about the crisis?"; "it strengthened my belief in his sincerity"; "I had a feeling that she was lying"
n.
a personal belief or judgment that is not founded on proof or certainty; "my opinion differs from yours"; "I am not of your persuasion"; "what are your thoughts on Haiti?"