Urgent.
Of a triangle: having all three interior angles measuring less than 90 degrees.
Of an accent or tone: generally higher than others.
Intense, sensitive, sharp.
Of a short-lived condition, in contrast to a chronic condition; this sense also does not imply severity.
Of an abnormal condition of recent or sudden onset, in contrast to delayed onset; this sense does not imply severity, unlike the common usage.
Brief, quick, short.
After a letter of the alphabet: having an acute accent.
With the sides meeting directly to form an acute angle (at an apex or base).
High or shrill.
Of an angle: less than 90 degrees.
To give an acute sound to.
An acute accent (´).
A person who has the acute form of a disorder, such as schizophrenia.
An accent or tone higher than others.
Requiring action to prevent bad consequences: urgent, pressing.
Warning of bad consequences: ill-boding; portentous.
Expressing bad consequences: dreadful; dismal.
Bad in quality, awful, terrible.