Acutely means very keenly or sharply felt. Not a background awareness — something you cannot ignore.
It attaches to awareness and to discomfort, so being acutely aware, acutely embarrassed or acutely conscious of something. That first phrase is the commonest by a long way. Medicine uses acute for conditions that come on suddenly and severely, which is the opposite of chronic, and an acute ward deals with those. Geometry has acute angles, which are less than ninety degrees.
1adverbacutelyIn a sharply felt or intense way.
“He was acutely aware of how it must have looked.”
Proto-Indo-European
*h₂eḱ-
Latin
acūta
Middle English
acute — of a disease or fever: starting suddenly and lasting for a short time; of a humour: irritating, sharp
English
acute
English, today
acutely
Built from
From acute + -ly. acute comes from Late Middle English acute (“of a disease or fever: starting suddenly and lasting for a short time; of a humour: irritating, sharp”), from Latin acūta, from acūtus (“sharp, sharpened”), perfect passive participle of acuō (“to make pointed, sharpen, whet”), from acus (“needle, pin”). The word is cognate to a doublet of ague. As regards the noun, which is derived from the verb, compare Middle English acūte (“severe but short-lived fever; of blood: corrosiveness, sharpness; musical note of high pitch”).
Etymology from Wiktionary, CC BY-SA