The word "怂恿" is formed by combining two characters, each containing the "心" (heart) radical to indicate a psychological or emotional impetus. "怂" integrates "从" (meaning to follow or from) with "心", suggesting influencing someone's inclinations, while "恿" incorporates "甬" (serving mainly as a phonetic component) with "心", reinforcing the notion of urging or incitement. Together, these characters create a compound word meaning to instigate or encourage someone to act.