Synonyms of milestone

milestone

noun

ˈmī(-ə)l-ˌstōn 

as in climax

a point in a chain of events at which an important change (as in one's fortunes) occurs

the new drug was regarded as a milestone in the treatment of heart disease

Synonyms & Similar Words

• climax
• landmark
• watershed
• corner
• milepost
• highlight
• climacteric
• turning point
• crisis
• transformation
• clincher
• turnaround
• metamorphosis
• break
• crusher
• conversion
• emergency
• topper
• capper
• turnabout
• juncture
• transfiguration
• zero hour
• clutch
• flash point
• extremity
• boiling point
• breaking point
• conjuncture
• crunch time
• exigency
• crunch
• Dunkirk
• crossroad(s)
• head

Example Sentences

Recent Examples of milestone

This Starship-to-Starship refueling demonstration is an important milestone for SpaceX and NASA to prove the viability of Starship being refueled in low-Earth orbit for lunar missions. — Eric Berger, ArsTechnica, 21 Oct. 2026

Between now and then, both SpaceX and Blue Origin have more than a dozen test demonstrations and vehicle milestones to achieve, including success during Artemis III and flights afterward. — Josh Dinner, Space.com, 21 Oct. 2026

Quantum Systems That doesn't make the flight of the Apex Recordhunter a meaningless milestone. — David Szondy october 20, New Atlas, 21 Oct. 2026

Given the 250th national milestone, mention of the Constitution is relevant. — Kamau Bobb october 21, Literary Hub, 21 Oct. 2026