low-key
Low-key (adverb) means Slightly, quietly or secretly; used before an admission the speaker is only half owning up to. Example: “I'm low-key obsessed with this album.”
How to use low-key
Learner’s notesIn plain EnglishQuiet and not making a fuss — or, in slang, "a little bit".
The adjective is neutral and fine in any writing; the adverb is informal slang.
As slang it goes directly before the verb or adjective it softens: "I low-key love it."
Trace the full origin ↓Fill the gap
Can you complete this real example?
I'm _____ obsessed with this album.
Etymology
Formed from low and key.