decline
Americanverb (used with object)
-
to withhold or deny consent to do, enter into or upon, etc.; refuse.
He declined to say more about it.
- Synonyms:
- reject
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to express inability or reluctance to accept; refuse with courtesy.
to decline an invitation; to decline an offer.
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to cause to slope or incline downward.
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Grammar.
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to inflect (a noun, pronoun, or adjective), as Latin puella, declined puella, puellae, puellae, puellam, puella in the five cases of the singular.
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to recite or display all or some subset of the inflected forms of a noun, pronoun, or adjective in a fixed order.
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verb (used without object)
-
to express courteous refusal; refuse.
We sent him an invitation but he declined.
-
to bend or slant down; slope downward; descend.
The hill declines to the lake.
- Antonyms:
- rise
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(of pathways, routes, objects, etc.) to follow a downward course or path.
The sun declined in the skies.
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to draw toward the close, as the day.
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to fail in strength, vigor, character, value, etc.; deteriorate.
- Synonyms:
- languish, diminish, weaken, decay, degenerate
- Antonyms:
- improve
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to fail or dwindle; sink or fade away.
to decline in popularity.
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to descend, as to an unworthy level; stoop.
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Grammar. to be characterized by declension.
noun
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a downward slope; declivity.
- Synonyms:
- hill
-
a downward movement, as of prices or population; diminution.
a decline in the stock market.
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a failing or gradual loss, as in strength, character, power, or value; deterioration.
the decline of the Roman Empire.
- Synonyms:
- enfeeblement, degeneration, retrogression
-
a gradual deterioration of the physical powers, as in later life or in disease.
After his seventieth birthday he went into a decline.
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progress downward or toward the close, as of the sun or the day.
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the later years or last part.
He became an editor in the decline of his life.
verb
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to refuse to do or accept (something), esp politely
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(intr) to grow smaller; diminish
demand has declined over the years
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to slope or cause to slope downwards
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(intr) to deteriorate gradually, as in quality, health, or character
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grammar to state or list the inflections of (a noun, adjective, or pronoun), or (of a noun, adjective, or pronoun) to be inflected for number, case, or gender Compare conjugate
noun
-
gradual deterioration or loss
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a movement downwards or towards something smaller; diminution
-
a downward slope; declivity
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archaic any slowly progressive disease, such as tuberculosis
Related Words
See refuse 1.
Other Word Forms
- declinable adjective
- decliner noun
- predecline verb (used with object)
- redecline verb
- undeclined adjective
- undeclining adjective
Etymology
Origin of decline
First recorded in 1275–1325; (verb) Middle English declinen, from Old French: “to inflect, turn aside, sink,” from Latin dēclīnāre “to slope, incline, bend”; compare Greek klī́nein “to lean” ( lean 1 ); (noun) Middle English declin, from Old French, derivative of decliner
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.
But for those who have watched him in recent years, the signs of decline have been clear.
From BBC • Apr. 4, 2026
Contra Costa County experienced the third largest decline in children’s eye care in the state.
From Los Angeles Times • Apr. 4, 2026
The results show a clear decline in the number of close-in giant planets as stars age.
From Science Daily • Apr. 4, 2026
The Nasdaq Composite dropped 7.1% in the first three months of the year, its largest quarterly percentage decline in a year, according to Dow Jones Market data.
From Barron's • Apr. 3, 2026
As the 2000s progressed, however, consumer habits shifted away from department stores and malls, which triggered their eventual decline.
From "The First State of Being" by Erin Entrada Kelly
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.
