unreliable
adjective
un·re·li·able
ˌən-ri-ˈlī-ə-bəl 
: not reliable : undependable, untrustworthy
an unreliable friend
an unreliable source of funding
an unreliable car
unreliability
noun
the unreliability of the data
a person with a reputation for unreliability
Examples of unreliable in a Sentence
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Both have been neglected for years: Bridges are crumbling, school buildings disintegrating, and trains — once a symbol of German efficiency — are now so unreliable that some lines are banned from neighboring Switzerland’s railways.
—
Tom Chivers, semafor.com, 4 June 2025
He’s also become notoriously unreliable as a live act, particularly in the Twin Cities.
—Ross Raihala, Twin Cities, 3 June 2025
If the United States is an unreliable partner and a source of chaos these countries will turn elsewhere, building new security and trade alliances that don’t depend on the inconstant, waning superpower.
—Lydia Polgreen, Mercury News, 27 May 2025
The Kremlin’s growing concerns about unreliable elites have been heightened by Russia’s fragile economic outlook.
—Andrei Yakovlev, Foreign Affairs, 16 May 2025
See All Example Sentences for unreliable
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Tom Chivers, semafor.com, 4 June 2025
He’s also become notoriously unreliable as a live act, particularly in the Twin Cities.
—Ross Raihala, Twin Cities, 3 June 2025
If the United States is an unreliable partner and a source of chaos these countries will turn elsewhere, building new security and trade alliances that don’t depend on the inconstant, waning superpower.
—Lydia Polgreen, Mercury News, 27 May 2025
The Kremlin’s growing concerns about unreliable elites have been heightened by Russia’s fragile economic outlook.
—Andrei Yakovlev, Foreign Affairs, 16 May 2025
See All Example Sentences for unreliable
Cite this Entry
“Unreliable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unreliable. Accessed 7 Jun. 2025.
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