1. Lose one's emotional or mental composure
   - fall apart, go to pieces

Type of: break down, lose it, snap

• count per minute
• Count Rumford
• countable
• countdown
• countenance
• counter
• counter cheque
• counter conditioning
• counter tube
• counter-drill
• counter-sabotage
• counteract
• counteraction
• counteractive
• counteractively
• counterargument
• counterattack
• counterattraction
• counterbalance
• counterbalanced
• counterbattery fire
• counterblast
• counterblow
• counterbombardment
• counterbore