1
: having many uncertain or unknown qualities or conditions
an iffy proposition
2
: of inconsistent or unreliable quality
iffiness
noun
Examples of iffy in a Sentence
Recent Examples on the Web
On top of all this, basing nuclear reactions on flowing mixtures of hot liquids involves some areas of nuclear physics that are, in technical terms, a bit iffy.
—
David Szondy, New Atlas, 17 Mar. 2025
Even so, Dylan was pretty iffy on the whole endeavor.
—Jordan Runtagh, People.com, 13 Mar. 2025
Be careful, however, of conflating an iffy farm system with a complete lack of building blocks for the future.
—Grant Brisbee, The Athletic, 18 Feb. 2025
The 49ers might want to land one or two, especially if Jackson is iffy.
—Matt Barrows, The Athletic, 24 Feb. 2025
See All Example Sentences for iffy
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David Szondy, New Atlas, 17 Mar. 2025
Even so, Dylan was pretty iffy on the whole endeavor.
—Jordan Runtagh, People.com, 13 Mar. 2025
Be careful, however, of conflating an iffy farm system with a complete lack of building blocks for the future.
—Grant Brisbee, The Athletic, 18 Feb. 2025
The 49ers might want to land one or two, especially if Jackson is iffy.
—Matt Barrows, The Athletic, 24 Feb. 2025
See All Example Sentences for iffy
Cite this Entry
“Iffy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/iffy. Accessed 16 Apr. 2025.
Copy CitationKids Definition
iffy
adjective
if·fy
ˈif-ē 
1
: having many uncertain or unknown qualities or conditions
an iffy situation
2
: of inconsistent or unreliable quality
iffiness
noun
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