acumen /akˈū-mən or ə-kūˈmen/

1. Sharpness
2. Quickness of perception
3. Penetration

acūˈminate transitive verb

1. To sharpen
2. To give a point to

To taper

Tapering in long hollow curves to a point (also acūˈminated)

• yield points
• yields
• yield strength
• yield strengths
• yield up the ghost
• yike
• yikes
• yikker
• yikkered
• yikkering
• yikkers
• yill
• yills
• yin
• yince
• yince-errand
• Yinglish
• yins
• yip
• yipped
• yippee
• yipper
• yippers
• yippie
• yippies