Right side
弟 supplies the sound: dì → tì with d/t alternation.
弟 originally pictured cord wound around a stake in order - by extension 'sequence,' then 'younger sibling.' Same phonetic family:
第 ordinal,
梯 ladder (stepwise),
剃 to shave. Faint semantic echo: tears tied to family, the weeping of younger siblings is a classical image of grief.
