an interval of time just before the onset of somethingmedical researchers who are on the cusp of a major breakthrough

the last and usually sharp or tapering part of something long and narrowthe cusp of a fang

in 1585

• wrinkle
• wrinkled
• wrinkles
• wrinkling
• writ
• write
• write down
• write-in
• write-ins
• write off
• writer
• writers
• writes
• writes down
• writes off
• write-up
• write-ups
• writhe
• writhed
• writhes
• spontaneousness
• spoof
• spoofed
• spoofing
• spoofs