serving our elders
悌 centers on the respectful, devoted attitude of serving and caring for one's elders, especially within a family or hierarchical relationship.
悌 combines 忄 (heart/mind) with 弟 (younger brother), suggesting the respectful, brotherly attitude expected when serving elders. The 弟 component likely contributes both sound and the idea of proper junior-senior relations.
The heart radical 忄 beside 弟 (younger brother) shows a younger person's heartfelt devotion to serving elders. Picture a younger brother with his heart set on respectfully caring for his older family members.
For テイ, imagine a younger brother serving tea (ティー) to his elders: tea -> テイ, and the heart 忄 shows his respectful attitude.
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