Goody-goody and High-hat

Goody-goody adjective - Affectedly or smugly good or self-righteous.

High-hat and goody-goody are semantically related In some cases you can use "High-hat" instead an adjective phrase "Goody-goody".

High-hat adjective - Being or characteristic of a person who has an offensive air of superiority and tends to ignore or disdain anyone regarded as inferior.

Goody-goody and high-hat are semantically related in self-righteously pious topic. Sometimes you can use "Goody-goody" instead an adjective phrase "High-hat".