RhymeZone: acute definitions

Definitions of acute:

noun: a mark (') placed above a vowel to indicate pronunciation
adjective: having or demonstrating ability to recognize or draw fine distinctions
Example: "An acute observer of politics and politicians"
adjective: of an angle; less than 90 degrees
adjective: having or experiencing a rapid onset and short but severe course
Example: "Acute appendicitis"
adjective: of critical importance and consequence
Example: "An acute (or critical) lack of research funds"
adjective: extremely sharp or intense
Example: "Acute pain"
adjective: ending in a sharp point