1. very serious or severe
2. having a sharp point or forming an angle less than 90 degrees
Usage: mathematics; geometry
3. having very good abilities to notice or understand things

Examples

• The patient was admitted with acute chest pain.
• An acute triangle has all angles less than 90 degrees.
• She has an acute sense of hearing.
• The acute shortage of water affected the entire region.
• His acute observations helped solve the mystery.
• The acute angle measured exactly 45 degrees.
• There is an acute need for more teachers in rural areas.