"acute : Brief, quick, short. High or shrill. Intense, sensitive, sharp. Urgent. (botany) With the..."

“acute : Brief, quick, short.
High or shrill.
Intense, sensitive, sharp.
Urgent.
(botany) With the sides meeting directly to form an acute angle (at an apex or base).
(geometry) Of an angle: less than 90 degrees.
(geometry) Of a triangle: having all three interior angles measuring less than 90 degrees.
(linguistics, chiefly historical) Of an accent or tone: generally higher than others.
(medicine) Of an abnormal condition of recent or sudden onset, in contrast to delayed onset; this sense does not imply severity, unlike the common usage.
(medicine) Of a short-lived condition, in contrast to a chronic condition; this sense also does not imply severity.
(orthography) After a letter of the alphabet: having an acute accent.”

- https://en.wiktionary.org/wiki/acute#English

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