Definitions
1.adjectiveBrief, quick, short."It was an acute event."
2.adjectiveHigh or shrill."an acute accent or tone"
3.adjectiveIntense, sensitive, sharp."She had an acute sense of honour. Eagles have very acute vision."
4.adjectiveUrgent."His need for medical attention was acute."
5.adjectiveWith the sides meeting directly to form an acute angle (at an apex or base).
6.adjectiveOf an angle: less than 90 degrees."The teacher pointed out the acute angle."
7.adjectiveOf a triangle: having all three interior angles measuring less than 90 degrees."an acute triangle"
8.adjectiveOf an accent or tone: generally higher than others.
9.adjectiveOf an abnormal condition of recent or sudden onset, in contrast to delayed onset; this sense does not imply severity, unlike the common usage."He dropped dead of an acute illness."
10.adjectiveOf a short-lived condition, in contrast to a chronic condition; this sense also does not imply severity."The acute symptoms resolved promptly."
11.adjectiveAfter a letter of the alphabet: having an acute accent."The last letter of ‘café’ is ‘e’ acute."