unsafe

adjective

un·​safe ˌən-ˈsāf How to pronounce unsafe (audio)
unsafer; unsafest
Synonyms of unsafenext
: not safe: such as
a
: able or likely to cause harm, damage, or loss
water that is unsafe to drink
unsafe driving habits
unsafe levels of lead
b
: not giving protection from danger, harm, or loss
an unsafe vehicle
unsafe working conditions
c
: not protected from danger, harm, or loss
feeling frightened and unsafe
d
: likely to take risks : not careful
unsafe drivers

Examples of unsafe in a Sentence

workers are forbidden from engaging in unsafe activities on company time people who have a record of being unsafe drivers usually have to pay higher insurance premiums
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Even in Caracas, where only five buildings collapsed, Rodríguez said at least 30 additional structures have already been classified as unsafe. Antonio María Delgado, Miami Herald, 3 July 2026 The complaint, obtained by PEOPLE, claims the Tesla — equipped with Autopilot and Full Self-Driving features — was defective and unsafe for normal use when it was sold. Paloma Chavez, PEOPLE, 3 July 2026 Because water was frequently unsafe and tea was politically boycotted, everyday favorites included rum punch, hard cider, and ale. Zach Dean Outkick, FOXNews.com, 3 July 2026 Road accidents are common in Pakistan because of poor road conditions, inadequate enforcement of traffic laws and unsafe driving practices, particularly in mountainous areas. ABC News, 3 July 2026 See All Example Sentences for unsafe

Word History

First Known Use

1597, in the meaning defined above

Time Traveler
The first known use of unsafe was in 1597

Browse Nearby Words

Cite this Entry

“Unsafe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsafe. Accessed 5 Jul. 2026.

More from Merriam-Webster on unsafe

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster