An even more minimal, deadpan version of the mouthless face, with a small dotted-line mouth suggesting deliberate silence or awkward invisibility — 'I'm just going to not respond to that.' Added in Unicode 14.0 (2021), it's often used to react to secondhand embarrassment while staying maximally noncommittal.
Keywords: depressed, disappear, dotted, face, hidden, hide, introvert, invisible, line, meh, whatever, wtv