terror-stricken
傽 centers on a state of extreme fear: being terror-stricken, paralyzed by fright.
傽 combines 亻 (person) with 章, which likely contributes the sound. The exact historical development is uncertain, but the character is used for a person in a state of terror.
A person (亻) standing next to a 章 (badge or emblem) that suddenly reveals a terrifying truth, leaving them terror-stricken.
For ショウ, imagine a person so terror-stricken they can only utter a shaky 'show' of fear: show -> ショウ.