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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"
adj.
deeply absorbed in thought; "as distant and bemused as a professor listening to the prattling of his freshman class"; "lost in thought"; "a preoccupied frown"
adj.
having or marked by unusual and impressive intelligence; "some men dislike brainy women"; "a brilliant mind"; "a brilliant solution to the problem"
adj.
characterized by quickness and ease in learning; "some children are brighter in one subject than another"; "smart children talk earlier than the average"