Etymology

decline

de·cline
D2E1C3L1I1N1E1

Today it means: Downward movement, fall. Full definition →

Middle English declinen ← Latin declīnō ← Proto-Indo-European *ḱley-
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The story

  1. Old French · derived fromdecliner
  2. Old English · inherited fromdeclīnian
  3. Proto-Indo-European · derived from*ḱley-
  4. Latin · derived fromdeclīnō“to bend, turn aside, deflect, inflect, decline”
  5. Middle English · inherited fromdeclinen
  6. English todaydecline

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.

Words from the same roots

Proto-Indo-European*ḱley- all →

leeleanlidinclineLeitedeclivityheteroclite

Etymology from Wiktionary, CC BY-SA 4.0.