acute
adj//əˈkjut//skarp, akut, spetsig
Intense; sensitive; sharp.
Urgent.
(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, postpositive) Of a letter of the alphabet, having an acute accent.
(geometry, of an angle) Less than 90 degrees.
(geometry, of a triangle) Having all three interior angles measuring less than 90 degrees.