Sagacious/səˈɡeɪʃəs/ Definition 1 of 3Pro Tip 1/2Decision Quality Use 'sagacious' when admiring someone's decision-making skills. Choosing to invest in education was a sagacious move. Pro Tip 2/2Positive Connotation 'Sagacious' has a positive vibe, implying respect for someone's decisions. Her sagacious advice helped us avoid financial pitfalls.