unshakable

adjective

un·​shak·​able ˌən-ˈshā-kə-bəl 

: not possible to weaken or get rid of : not able to be shaken

an unshakable habit

unshakable determination/opposition

unshakably

ˌən-ˈshā-kə-blē 

adverb

Switzerland is as unshakably opposed to sanctions as ever: neutrality, the Swiss claim, requires it.

—The Economist

Synonyms

• calm
• serene
• nonchalant
• unflappable
• imperturbable
• composed
• nerveless
• unshaken
• cool
• collected

Examples of unshakable in a Sentence

we need the kind of leader who will be unshakable in a national crisis

Recent Examples on the Web

Self-advocacy starts by cultivating a shock-absorbent, insulated core, where your worth, values, and strengths are kept as safe and unshakable as possible. —Dr. Ella F. Washington, Forbes.com, 24 June 2025

Black dandyism is both a quiet revolution, a loud statement, and an unshakable legacy. —Kristopher Fraser, Robb Report, 20 June 2025

Although some tents collapsed under the weight of the weather, and attendees were forced to seek shelter more than once, the energy was still unshakable. —Amber Corrine, VIBE.com, 20 June 2025

Sheinbaum assembled facts and quickly came to unshakable conclusions. —Stephania Taladrid, New Yorker, 21 Apr. 2025

Word History

First Known Use

1611, in the meaning defined above

Rhymes for unshakable

• breakable
• unbreakable
• unmistakable