stop
渟 centers on water that stops moving: a pool or stagnant water where the flow ceases.
渟 combines 氵 (water) with 亭, which likely contributes the sound and the idea of stopping or pausing, suggesting water that has come to a standstill.
Water 氵 beside a pavilion 亭: imagine a quiet garden pond where the water has stopped flowing, perfectly still next to the pavilion.
For テイ, picture a tea (テイ) cup placed on the edge of the still pond: the tea's stillness matches the stopped water.