1
a
: the process of freezing
b
: a covering of minute ice crystals on a cold surface
also
: ice particles formed from a gas
c
: the temperature that causes freezing
2
a
: coldness of deportment or temperament : an indifferent, reserved, or unfriendly manner
b
: failure
the play was … a most dreadful frost—
Arnold Bennett
Arnold Bennett
frosted; frosting; frosts
1
a
: to cover with or as if with frost
especially
: to put icing on (cake)
b
: to produce a fine-grained slightly roughened surface on (such as metal or glass)
2
: to injure or kill (plants) by frost
3
: to make angry or irritated
that really frosts me
: to become frosted
Synonyms
Examples of frost in a Sentence
Noun
The grass was covered with frost.
Frost formed on the window.
These plants should bloom until the first frost of the season.
We had an early frost.
Verb
The cold had frosted the windows.
I have to frost the birthday cake.
Recent Examples on the Web
Yvonne Gordon, AFAR Media, 31 Jan. 2025
The National Weather Service (NWS) has advised residents to prepare for wet and cold conditions in the coming days, with concerns about road safety and frost overnight.
—Thomas G. Moukawsher, Newsweek, 30 Jan. 2025
Tricia Manzanero Stuedeman, Southern Living, 26 Jan. 2025
In addition to textured frosting in neutral shades, the treats also included adorable tongues, noses and eyes, all of which were seemingly also made of frosting.
—Bailey Richards, People.com, 25 Jan. 2025
See all Example Sentences for frost 
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Noun
During those months, early sunsets give up to 16 hours of darkness, before nighttime frost and ice hit roads in December and January.
—Yvonne Gordon, AFAR Media, 31 Jan. 2025
The National Weather Service (NWS) has advised residents to prepare for wet and cold conditions in the coming days, with concerns about road safety and frost overnight.
—Thomas G. Moukawsher, Newsweek, 30 Jan. 2025
Verb
Powdered sugar: Sweetens and thickens the frosting topping.
—Tricia Manzanero Stuedeman, Southern Living, 26 Jan. 2025
In addition to textured frosting in neutral shades, the treats also included adorable tongues, noses and eyes, all of which were seemingly also made of frosting.
—Bailey Richards, People.com, 25 Jan. 2025
See all Example Sentences for frost
Dictionary Entries Near frost
Cite this Entry
“Frost.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/frost. Accessed 11 Feb. 2025.
Copy CitationKids Definition
frost
1 of 2 noun1
: the temperature that causes freezing
2
: a covering of tiny ice crystals on a cold surface
frost
2 of 2 verb1
a
: to cover with or as if with frost
especially
: to put icing on (as cake)
b
: to give a surface that looks like frost to
2
: to injure or kill by frost : freeze
Biographical Definition
Frost
biographical name
Robert Lee 1874–1963 American poet
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