capstone

noun

cap·​stone ˈkap-ˌstōn 

1

: a coping stone : coping entry 1

2

: the high point : crowning achievement

the capstone of her career

Synonyms of capstone

• pinnacle
• culmination
• zenith
• top
• height
• peak
• apex

Examples of capstone in a Sentence

her election as the state's first woman governor was a capstone of a long political career

Recent Examples on the Web

His conviction would be a capstone for the government's investigation. — ABC News, 7 Sep. 2026

His conviction would be a capstone for the government’s investigation. — Michael Kunzelman, Fortune, 7 Sep. 2026

For Șerban, the premiere is a capstone in what has already been a remarkable career. — Christopher Vourlias, Variety, 6 Sep. 2026

In a career that began in a small Louisiana recording studio, Dolly’s bluegrass albums were a fitting capstone to a life’s work that spanned five decades and continues to evolve. — Martha Ackmann, Vulture, 27 Aug. 2026

Word History

Etymology

cap entry 1

First Known Use

1665, in the meaning defined at sense 1

Rhymes for capstone

• alone
• atone
• backbone
• bemoan
• bluestone
• breastbone
• brownstone
• cheekbone
• condone
• curbstone
• cyclone
• dethrone