Meaning
- Verb (intransitive/transitive): to become smaller, fewer, weaker, or worse; to refuse politely.
- Verb (intransitive): to slope downward.
- Noun: a decrease or deterioration in amount, quality, activity, etc.
Grammar and Usage
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Parts of speech: verb (T/I), noun (C/U).
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Change in numbers/quality:
- decline by + amount/percentage: “profits declined by 8%.”
- decline from A to B: “sales declined from 500 to 420 units.”
- be in/into decline, on the decline: describe a continuing downturn.
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Polite refusal (formal):
- decline + noun: “They declined the invitation.”
- decline to + verb: “She declined to comment.”
- Compared with refuse/reject: decline is more formal and courteous; reject is stronger; refuse is neutral/firm.
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Other uses:
- Physical slope: “The path declines to the river.”
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Countability (noun): a sharp/gradual/steady decline; economic/price/health decline.
Common Phrases
- on the decline / in decline
- a sharp/steep/gradual/steady decline
- economic decline / population decline
- age-related cognitive decline
- decline to comment
- decline an invitation/offer
Collocations
- Verbs + decline: suffer/see/experience/witness/face a decline
- Adjectives + decline: sharp/steep/dramatic/marked/gradual/steady decline
- Noun + decline: price/sales/revenue/market/attendance/health decline
- Prepositions: decline in demand; decline of the industry; decline from… to…; decline by 10%
- Verb patterns: decline to do sth; decline an offer/request
Examples
- Smartphone shipments declined by nearly 6% last quarter.
- The company declined to comment on the ongoing investigation.
- Attendance has been in steady decline since the ticket price increase.
- We politely declined the invitation because of a prior engagement.
- Analysts warn of a sharp decline in consumer confidence.
- His health began to decline after the operation.
- The trail declines gently toward the lakeshore.
- Birth rates declined from 1.7 to 1.5 in a decade.
- The museum has seen a gradual decline in weekday visitors.
- She declined the job offer to pursue graduate studies.
Synonyms or Related
- Decrease sense: decrease, drop, fall, dip, diminish, dwindle, deteriorate, wane
- Refusal sense: refuse, turn down, reject, pass (on), bow out
- Opposites (helpful): rise, increase; accept, agree