rubatosis: n. the unsettling awareness of your own heartbeat, whose tenuous muscular throbbing feels less like a metronome than a nervous ditty your heart is tapping to itself, the kind that people compulsively hum or sing while walking in complete darkness, as if to casually remind the outside world, I’m here, I’m here, I’m here.

opia: n. the ambiguous intensity of looking someone in the eye, which can feel simultaneously invasive and vulnerable—their pupils glittering, bottomless and opaque—as if you were peering through a hole in the door of a house, able to tell that there’s someone standing there, but unable to tell if you’re looking in or looking out.

{definitions from dictionaryofobscuresorrows.com}