capstone

noun

cap·​stone ˈkap-ˌstōn 

1

: a coping stone : coping

2

: the high point : crowning achievement

the capstone of her career

Synonyms

• acme
• apex
• apogee
• climax
• crescendo
• crest
• crown
• culmination
• head
• height
• high noon
• high-water mark
• meridian
• ne plus ultra
• noon
• noontime
• peak
• pinnacle
• sum
• summit
• tip-top
• top
• zenith

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

Lake Oroville, the capstone of the state reservoir system, was at 120% of its historical average on Friday, state data shows. —Sharon Bernstein, Sacbee.com, 11 Apr. 2025

The very next day, Boehner announced his imminent resignation, citing the pope’s visit as the capstone of his career. —Alex Gangitano, The Hill, 21 Apr. 2025

It was supposed to be Flagg taking center stage before his eventual capstone moment by winning the National Championship in San Antonio after winning the National College Player of the Year award. —Dj Siddiqi, Forbes.com, 6 Apr. 2025

While no present could outdo the relief of kissing a thesis or capstone goodbye, these gift ideas will make entering the next chapter of their lives a little easier. —Jake Henry Smith, Glamour, 20 Mar. 2025

Word History

Etymology

cap entry 1

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for capstone

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