against
Americanpreposition
-
in opposition to; contrary to; adverse or hostile to: against reason.
twenty votes against ten;
against reason.
-
in resistance to or defense from.
protection against burglars.
-
in an opposite direction to.
to ride against the wind.
-
into contact or collision with; toward; upon.
The rain beat against the window.
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in contact with.
to lean against the wall.
-
in preparation for; in provision for.
money saved against a rainy day.
-
having as background.
a design of flowers against a dark wall.
-
in exchange for; as a balance to or debit or charge on.
He asked for an advance against his salary.
-
in competition with.
a racehorse running against his own record time.
-
in comparison or contrast with.
a matter of reason as against emotion.
-
The car is against the building.
conjunction
idioms
preposition
-
opposed to; in conflict or disagreement with
they fought against the legislation
-
standing or leaning beside or in front of
a ladder against the wall
-
coming in contact with
the branches of a tree brushed against the bus
-
in contrast to
silhouettes are outlines against a light background
-
having an adverse or unfavourable effect on
the economic system works against small independent companies
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as a protection from or means of defence from the adverse effects of
a safeguard against contaminated water
-
in exchange for or in return for
-
rare in preparation for
he gave them warm clothing against their journey through the night
-
as opposed to or as compared with
he had two shots at him this time as against only one last time
Etymology
Origin of against
First recorded in 1125–75; Middle English agens, ageynes, equivalent to ageyn again + -es -s 1; for -t cf. whilst, amongst
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Yet despite winning the opening hole, Nordqvist's gamble never looked like paying off against the formidable pairing of Korda and Allisen Corpuz.
From BBC ● Sep. 11, 2026
“But it would cut against his notion that the Fed’s job isn’t to provide forward guidance of that type,” he said.
From The Wall Street Journal ● Sep. 11, 2026
If the Fed decides against raising rates, Lee said he expects many tech names to “be in very good shape.”
From MarketWatch ● Sep. 11, 2026
England had "no plan" and were "out of control" in the face of Razaullah's stunning hitting on the third day of the final Test against Pakistan, according to former captain Alastair Cook.
From BBC ● Sep. 11, 2026
Coach fixes his gaze on me, taps his clipboard against his thigh.
From "Red Flags and Butterflies" by Sheryl Azzam
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.