Meanings
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1
verb
To politely refuse something.
I declined their invitation to the party.
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2
verb
To become smaller, weaker, or worse.
Sales have declined steadily since last year.
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3
noun
A reduction or worsening in amount, quality, or condition.
There has been a sharp decline in the number of visitors.
Thesaurus
Etymology
From Middle English declinen, and ultimately Latin declīnō (“to bend, turn aside, deflect, inflect, decline”, from dē- (“down”) + clīnō (“to bend, to incline”)), from Proto-Indo-European *ḱley- (English lean). The senses arrived from two separate pathways in Middle English: * The grammatical sense came from Old English declīnian, which was borrowed directly from the Latin etymon. * All senses except the grammatical sense were derived from those of Old French decliner. Old French itself borrowed the verb from Latin.