Antonym: action. Similar words: take action, action, fraction, attraction, practitioner, interaction, transaction, react. Meaning: [rɪ'ækʃn] 
n. 1. a response that reveals a person's feelings or attitude 2. a bodily process occurring due to the effect of some foregoing stimulus or agent 3. (chemistry) a process in which one or more substances are changed into others 4. an idea evoked by some experience 5. doing something in opposition to another way of doing it that you don't like 6. extreme conservatism in political or social matters 7. (mechanics) the equal and opposite force that is produced when any force is applied to a body.
n. 1. a response that reveals a person's feelings or attitude 2. a bodily process occurring due to the effect of some foregoing stimulus or agent 3. (chemistry) a process in which one or more substances are changed into others 4. an idea evoked by some experience 5. doing something in opposition to another way of doing it that you don't like 6. extreme conservatism in political or social matters 7. (mechanics) the equal and opposite force that is produced when any force is applied to a body. 
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121. The heat brings about a chemical reaction, and oxygen is liberated.
122. Her left-wing views are a reaction against the conservatism of her parents.
123. The protests are a delayed reaction to last week's announcement.
124. When Chappel approached me about the job, my first reaction was of disbelief.
125. Forty degrees centigrade is the maximal temperature at which this chemical reaction will occur.
126. Let's have your gut reaction to the facts as we know them.
127. The return to traditional family values is a reaction against the permissiveness of recent decades.
128. It is interesting to observe the reaction of the children to these changes.
129. Logan's reaction was predictable.
130. I was absolutely astonished by the reaction to our engagement. Everyone started congratulating us.
131. There's been a drop in ticket sales in reaction to the review.
132. The energy released by the nuclear reaction is transformed into heat.
133. A spokesman said the changes were not in reaction to the company's recent losses.
134. Her only reaction was a slight flicker of her eyes.
135. A sudden drop on Wall Street can set off a chain reaction in other financial markets.
136. What is the City's reaction to the cut in interest rates?
137. Her outburst was a delayed reaction to an unpleasant letter she'd received that morning.
138. The slump on Wall Street set up a chain reaction in stock markets around the world.
139. Her arrest produced an immediate/a sudden reaction from the press.
140. He had the cheek to make personal remarks and expect no reaction.
141. She was surprised at the reaction brought by the mention of his name.
142. Their reaction contrasts sharply with the stiff upper lip of the English.
143. She had a very bad allergic reaction to the peanuts.
144. I walked up the stairs,(www.Sentencedict.com) pondering on her reaction to my news.
145. Their reaction dismayed him.
146. Can you gauge what her reaction is likely to be?
147. My first reaction was that this must be a leg-pull.
148. The knee-jerk reaction to this is to call for proper security in all hospitals.
149. An emergency fund was set up in reaction to the famine.
150. They are making all sorts of suppositions about our possible reaction.
More similar words: take action, action, fraction, attraction, practitioner, interaction, transaction, react, react to, fiction, auction, section, sanction, election, function, reduction, selection, objection, infection, projection, production, collection, inspection, prediction, functional, protection, connection, conviction, distinction, reflection.