Noun

• S: (n) chemical reaction, reaction ((chemistry) a process in which one or more substances are changed into others) "there was a chemical reaction of the lime with the ground water"
• S: (n) reaction (an idea evoked by some experience) "his reaction to the news was to start planning what to do"
• direct hypernym / inherited hypernym / sister term
• S: (n) idea, thought (the content of cognition; the main thing you are thinking about) "it was not a good idea"; "the thought never entered my mind"
• S: (n) inspiration (arousal of the mind to special unusual activity or creativity)
• S: (n) cogitation (a carefully considered thought about something) "his cogitations were dutifully recorded in his daybook"
• S: (n) concept, conception, construct (an abstract or general idea inferred or derived from specific instances)
• S: (n) preoccupation (an idea that preoccupies the mind and holds the attention)
• S: (n) misconception (an incorrect conception)
• S: (n) plan, program, programme (a series of steps to be carried out or goals to be accomplished) "they drew up a six-step plan"; "they discussed plans for a new bond issue"
• S: (n) figment (a contrived or fantastic idea) "a figment of the imagination"
• S: (n) generalization, generalisation, generality (an idea or conclusion having general application) "he spoke in broad generalities"
• S: (n) suggestion (an idea that is suggested) "the picnic was her suggestion"
• S: (n) impression, feeling, belief, notion, opinion (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"
• S: (n) reaction (an idea evoked by some experience) "his reaction to the news was to start planning what to do"
• S: (n) theorem (an idea accepted as a demonstrable truth)
• S: (n) notion, whim, whimsy, whimsey (an odd or fanciful or capricious idea) "the theatrical notion of disguise is associated with disaster in his stories"; "he had a whimsy about flying to the moon"; "whimsy can be humorous to someone with time to enjoy it"
• S: (n) meaning, substance (the idea that is intended) "What is the meaning of this proverb?"
• S: (n) burden (the central idea that is expanded in a document or discourse)
• S: (n) theme, motif (a unifying idea that is a recurrent element in literary or artistic work) "it was the usual `boy gets girl' theme"
• S: (n) ideal (the idea of something that is perfect; something that one hopes to attain)
• S: (n) idealization, idealisation (something that exists only as an idea)
• S: (n) keynote (a fundamental or central idea)
• S: (n) kink (an eccentric idea)
• S: (n) reaction, response (a bodily process occurring due to the effect of some antecedent stimulus or agent) "a bad reaction to the medicine"; "his responses have slowed with age"
• S: (n) reaction ((mechanics) the equal and opposite force that is produced when any force is applied to a body) "every action has an equal and opposite reaction"
• S: (n) reaction (a response that reveals a person's feelings or attitude) "he was pleased by the audience's reaction to his performance"; "John feared his mother's reaction when she saw the broken lamp"
• direct hypernym / inherited hypernym / sister term
• S: (n) response (a result) "this situation developed in response to events in Africa"
• derivationally related form
• W: (v) react [Related to: reaction] (show a response or a reaction to something)
• S: (n) reaction (extreme conservatism in political or social matters) "the forces of reaction carried the election"
• S: (n) reaction (doing something in opposition to another way of doing it that you don't like) "his style of painting was a reaction against cubism"