English Reference
verb · noun

sap

v. · n.
US /ˈsæp/ UK /sˈæp/ sap UK spelling sap's, sap's, sapped

  1. 01 B2 Upper Intermediate

    v.to slowly take away someone's strength, energy, or confidence.

    v.to gradually weaken or destroy a person's strength or a system's foundations. Transitive; often used with abstract objects like 'energy', 'will', or 'confidence'.

    Simple

    The long, hot walk in the sun started to sap my energy.

    In context

    Years of internal conflict and corruption served to sap the nation's economic vitality, leaving it vulnerable to external shocks.

  2. 02 B2 Upper Intermediate Science

    n.the liquid that carries food through a plant or tree.

    n.the fluid, consisting of water and dissolved nutrients, that circulates through the vascular system of a plant.

    Simple

    Maple syrup is made by boiling the sap collected from maple trees.

    In context

    In early spring, the rising sap provides the necessary nutrients for the dormant buds to begin their seasonal growth.

    Usage

    Uncountable in most botanical contexts.

  3. 03 C1 Advanced Informal

    n.a person who is too kind or easy to trick. You might call someone this if they believe a lie very easily.

    n.a person regarded as weak, overly sentimental, or easily deceived. Informal and slightly dated in register.

    Simple

    I felt like a total sap for believing his excuse about the car.

    In context

    He was a bit of a sap when it came to romance, always falling for the most obvious sob stories.

    Teacher's tip

    This sense is somewhat old-fashioned; modern speakers might use 'pushover' or 'sucker' instead.

    simpletonfoolpushover
  4. 04 C2 Proficiency American EnglishInformal

    n.a small, heavy tool used as a weapon to hit someone.

    n.a short, heavy, often leather-covered club used as a bludgeon. Primarily American English usage.

    Simple

    The detective in the old movie carried a sap in his pocket for protection.

    In context

    The assailant was apprehended while attempting to conceal a lead-filled sap beneath his coat.

    Teacher's tip

    Mostly found in mid-20th-century crime fiction and film noir.

    blackjackclubbludgeon
  5. 05 B2 Upper Intermediate Computing

    n.a very large German company that makes software for businesses.

    n.A major multinational software corporation (SAP SE) specialising in enterprise resource planning software.

    Simple

    Our company is switching to SAP to manage our payroll and inventory.

    In context

    The implementation of the new SAP module was delayed due to unforeseen compatibility issues with the existing legacy database.

    Usage

    Usually pronounced as individual letters (S-A-P).

    Teacher's tip

    In business contexts, this is almost always the intended meaning.

It blocks the flow of sap in trees, causing them to wilt and die within months.

The Guardian· 23 Aug 2026

The starting point is the same as for an ordinary balloon: natural latex derived from the sap of the rubber tree, native to the Amazon.

Phys.org· 23 Aug 2026

Abbreviation.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level C2 · Proficiency
Frequency Frequent
Updated