restricted to what is essential or with no ornamentation

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

a term used to describe cheap food from supermarkets "basic or economy" range, often said with an accompanying horizontal wave

Just the basics, doing something well and being lowkey about it

Only the most Badass store. EVERYONE wants to work at Nofrills. And everyone who does HATES it but wont quit because Nofrills employees ROCK

A expression encouraging a calm additude.