Pronunciation

/rɪˈækt/

Definitions

Noun

• Chemical reaction: A process in which one or more substances change into new substances, often accompanied by energy release or absorption. Example: “The mixture underwent a chemical reaction when exposed to heat.”
• Physical reaction: An immediate response to a stimulus, typically emotional or physiological. Example: “Her fear triggered a physical reaction in her muscles.”
• Psychological reaction: An individual’s thought, feeling, or behavior in response to a situation. Example: “People had mixed psychological reactions to the news.”

Verb

• React to: To respond or behave in a particular way in response to a particular stimulus or situation. Example: “The teacher asked a question, and the students quickly reacted to it.”
• React with: To undergo a chemical reaction when combined with another substance. Example: “Iron reacts with oxygen to form rust.”
• React against: To oppose or resist something. Example: “Many people reacted against the proposed tax hike.”

Adjective

• Reactive: Quick to respond or show a response to stimuli. Example: “A reactive immune system can fight off infections effectively.”
• Non-reactive: Not responding or showing a reaction to something. Example: “This material is non-reactive with most chemicals.”

Phrases

• “React to a stimulus”
• “React positively/negatively”
• “React with irritation”
• “A reactive surface”

Example Sentences

• Noun: “The mixture’s chemical reaction produced a colorful display.”
• Verb: “He quickly reacted to the insult by leaving the room.”
• Adjective: “Her skin is very reactive to certain fabrics.”

Synonyms (Verb)

• Respond
• Act
• Answer
• Counteract
• Constitute a response
• Respond to stimuli

Antonyms (Verb)

• Ignore
• Remain unchanged
• Be unresponsive