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sap1

Pronunciation: /sap/
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Definition of sap

noun

[mass noun]
  • the fluid which circulates in the vascular system of a plant, consisting chiefly of water with dissolved sugars and mineral salts.
  • vigour or energy:the hot, heady days of youth when the sap was rising

verb (saps, sapping, sapped)

[with object]
  • gradually weaken or destroy (a person’s strength or power):our energy is being sapped by bureaucrats and politicians
  • (sap someone of) drain someone of (strength or power):her illness had sapped her of energy and life

Derivatives

sapless

adjective

Origin:

Old English sæp, probably of Germanic origin. The verb (dating from the mid 18th century) is often interpreted as a figurative use of the notion ‘drain the sap from’, but is derived originally from the verb sap2, in the sense 'undermine'

sap in other Oxford dictionaries

Definition of sap in the US English dictionary