Reaction/riˈækʃn/ Definition 1 of 4Pro Tip 1/3Emotional Color The word can convey emotions, showing approval or disapproval, or surprise. Her reaction was priceless when she got the gift. Pro Tip 2/3Verb Influence The verb before 'reaction' can change its meaning, like 'spark a reaction'. The CEO's announcement sparked a reaction among the employees. Pro Tip 3/3Cultural Relevance Reactions can differ culturally; be aware of varying norms when discussing reactions. His reaction was subdued, which is quite typical in his culture.