The Brief: Low key is a way to describe something that is not a big deal.

Bluesquiggle
DEEP DIVE

Also stylized as “lowkey” or “low-key,” the term means that something is modest, subtle, restrained, or of low intensity. It can also mean laid back, relaxed, minimally, or secretly. Low-key can be a modifier to describe a restrained version of something that would normally be high-key. For example, “low key lit” means that something is awesome or exciting, but in a casual way.

“Low key” is not to be confused with “Loki” the name of a Marvel comics character with a similar-sounding pronunciation.

Why they on me? I’m flyin’, sippin’ low-key
I’m sippin’ low-key in Onyx, rider, rider –Travis Scott, “Goosebumps”