rubatosis
/ˌɹuːbɑˈtəʊ.sɪs/
Etymology
Presumably rubato + -osis. Coined by American author and neologist John Koenig in 2012 as part of his Dictionary of Obscure Sorrows project.
Why this word is great
RUBATOSIS — [Noun] The unsettling awareness of one's own heartbeat. Presumably from Italian rubato ("stolen, as in musical tempo") + -osis ("a state or condition"), coined by John Koenig in 2012. Unlike "palpitation" (which implies an abnormal rhythm) or "somatic vigilance" (which casts too wide a net), rubatosis is the quiet theft of your attention by the body's most basic metronome. It is lying awake in the dark, counting the thuds against the pillow; pressing two fingers to your wrist and feeling the alien pulse of a hidden machine; or sitting perfectly still in a silent room, suddenly aware that you are, against all logic, a thing that beats. The heart insists on being noticed—even when it has nothing urgent to say.
noun
- The unsettling awareness of one's own heartbeat“Amador rocked me slowly in that amniotic tranquility and I started to get sleepy. I could hear the unsettling rubatosis of my beating heart.”