Lowkey
Etymology
From the older adjective “low-key” (subdued, restrained), itself from the idea of a low musical key. African American Vernacular English extended it into an adverbial hedge, and the pair lowkey/highkey spread widely on social media in the 2010s.
adverb · /LOH-kee/
Quietly, to a modest degree, or on the down-low — the understated counterpart to highkey (openly, very much).
What it names
It hedges a statement, letting you admit something while signaling you’re keeping it low-volume: a mild confession, a guilty pleasure, a feeling you’re half-owning. Its opposite, highkey, drops the hedge and declares the thing loudly and without embarrassment.
Example
I’m lowkey nervous about the presentation, but highkey excited to finally ship it.
Related idea
Functions like sort of or secretly, but with a specific implication of deliberately keeping something quiet.