Acute meaning

a mark placed above a vowel to indicate pronunciation

having or experiencing a rapid onset and short but severe course

“acute appendicitis”

“the acute phase of the illness”

extremely sharp or severe

“acute pain”

“felt acute annoyance”

having or demonstrating ability to recognize or draw fine distinctions

“an acute observer of politics and politicians”

“incisive comments”

of an angle; less than 90 degrees

ending in a sharp point

of critical importance and consequence

“an acute (or critical) lack of research funds”