Rigorous/ˈrɪɡərəs/ Definition 1 of 4Pro Tip 1/3Precision Emphasis Use 'rigorous' to emphasize extreme precision in actions or analysis. Only a rigorous inspection could ensure the machine's safety. Pro Tip 2/3Detail Oriented When something requires meticulous attention to details, 'rigorous' is appropriate. Her rigorous approach to research improved the study's accuracy. Pro Tip 3/3Not Always Negative 'Rigorous' can have positive connotations, showing something is well done. His rigorous planning paid off during the event.