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• sap
  sap

  noun

  the juice or vital circulating fluid of a plant, especially of a woody plant.
• SAP
  SAP

  abbreviation

  South African Police

sap

¹ American  

[sap] / sæp /

noun

1. the juice or vital circulating fluid of a plant, especially of a woody plant.

2. any vital body fluid.

3. energy; vitality.

4. sapwood.

5. Slang. a fool; sucker; dupe.

6. Metallurgy. soft metal at the core of a bar of blister steel.

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verb (used with object)

sapped, sapping

1. to drain the sap from.

sap ² American  

[sap] / sæp /

noun

1. Fortification. a deep, narrow trench constructed so as to form an approach to a besieged place or an enemy's position.

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verb (used with object)

sapped, sapping

1. to undermine; gradually or insidiously weaken or destroy.

   Synonyms:

   undermine, weaken, tire, impair, exhaust, enfeeble, enervate, drain, deplete

2. Fortification.

   1. to approach (a besieged place or an enemy position) by means of deep, narrow trenches protected by gabions or parapets.

   2. to dig such trenches in (ground).

verb (used without object)

sapped, sapping

1. Fortification. to dig a sap.

sap ³ American  

[sap] / sæp /

noun

1. a short club with a heavy tip that is used as a weapon; blackjack; bludgeon.

   The burglar carried a set of lockpicks and a sap.

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verb (used with object)

1. to hit (someone) with a club.

   If he tries to sneak out, I'll sap him over the head.

sap ¹ British  

/ sæp /

noun

1. a solution of mineral salts, sugars, etc, that circulates in a plant

2. any vital body fluid

3. energy; vigour

4. slang a gullible or foolish person

5. another name for sapwood

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verb

1. to drain of sap

SAP ² British  

abbreviation

1. South African Police

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SAP ³ British  

/ sæp /

acronym

1. Standard Assessment Procedure, the recognized performance indicator for measuring energy efficiency in buildings

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sap ⁴ British  

/ sæp /

noun

1. a deep and narrow trench used to approach or undermine an enemy position, esp in siege warfare

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verb

1. to undermine (a fortification, etc) by digging saps

2. (tr) to weaken

sap Scientific  

/ săp /

1. The watery fluid that circulates through a plant that has vascular tissues. Sap moving up the xylem carries water and minerals, while sap moving down the phloem carries water and food.

2. See cell sap

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Other Word Forms

• sapless
  adjective

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Etymology

Origin of sap¹

First recorded before 900; Middle English; Old English sæp; cognate with Dutch sap; akin to German Saft juice, Old Norse safi; sap ¹ in def. 5 a shortening of saphead

Origin of sap²

First recorded in 1585–95; from French noun sape “spade, spadework,” derivative of saper “to dig a trench,” from Italian zappare “to undermine,” a military term, based on zappa “hoe”

Origin of sap³

First recorded in 1895–1900; perhaps shortening of sapling or sapwood (used as a tool or weapon)

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Explanation

To sap something is to drain or deplete something over time. If you sap a maple tree, you drain the liquid inside it to make maple syrup. But if you sap a person of strength, you've rendered him defenseless. Whether used as a noun or verb, sap is rarely a good thing. If your energy or will is sapped, it’s not meant lightly; it means you have been exhausted of all your reserve energy, you’re reduced to a shell. If someone calls you "a sap," it suggests you lack strength and character. And if you get sap — the sticky liquid inside a tree — on your hands, good luck getting it off in the middle of a forest without a bar of soap and running water. Yuck.

Example Sentences

See Examples For:

sap SAP sapped sapping

Talk of heading off artificial intelligence’s potential role in destroying humanity did little to sap demand for hyperscaler stocks.

From The Wall Street Journal ● Sep. 15, 2026

Giant hogweed contains a sap which can leave painful blistering and scarring when it comes into contact with human skin.

From BBC ● Jul. 28, 2026

One such chemical is sulfoxaflor, a next generation pesticide introduced in 2013 to eliminate sap feeding insects such as aphids on crops including soybeans and corn.

From Science Daily ● Jul. 10, 2026

They slice into the skin and hang receptacles to gather the drip of white sap.

From Los Angeles Times ● Jun. 24, 2026

Whenever she saw a mutowa tree, she went ashore to gather more sap and more wild cotton.

From "A Girl Named Disaster" by Nancy Farmer

Over the last few years, investors have tended to focus on the German business-software group’s current cloud backlog—a measure of sales that SAP expects over the coming year based on existing contracts.

From The Wall Street Journal ● Oct. 22, 2026

SAP is working on a new metric to show the impact of artificial intelligence on its operations, according to Chief Financial Officer Dominik Asam.

From The Wall Street Journal ● Oct. 22, 2026

While a student there, he interned at Massachusetts-based cloud computing company Akamai Technologies, German software company SAP, and Microsoft, according to his LinkedIn.

From Los Angeles Times ● Oct. 17, 2026

SAP shares trade 1% lower at 186.62 euros.

From The Wall Street Journal ● Oct. 7, 2026

The area its radius vector sweeps out is therefore SAP, instead of what it would have been, SAB.

From Pioneers of Science by Sir Oliver Lodge

Low-friction digital convenience has sapped life and music of their organic weight.

From Salon ● Oct. 24, 2026

They said they paid $2,146,958.22 for gold coins worth roughly $1,360,925.00, “without any notion that in a matter of just two weeks” their retirement accounts had been sapped of more than $780,000.

From Los Angeles Times ● Oct. 21, 2026

The downside is that the buydowns are expensive and have sapped profit margins.

From The Wall Street Journal ● Oct. 11, 2026

In 2020, it was global lockdowns that sapped demand for fuel almost overnight, while triggering a short-lived U.S. recession.

From MarketWatch ● Sep. 20, 2026

It had been a sudden and devastating death, and everyone said it was grief that had sapped the old man’s ability to make sense anymore.

From "Shadowshaper" by Daniel José Older

High energy prices and fading consumer sentiment are sapping the appetite of individual traders, while the spike in U.S.

From MarketWatch ● Oct. 26, 2026

What it suggests is each rally is sapping more and more strength from the bulls.

From MarketWatch ● Jun. 19, 2026

With higher energy prices sapping growth, tax revenues are set to be lower than eurozone governments had anticipated when framing their budgets for 2026.

From The Wall Street Journal ● May 27, 2026

But this has been a recurring issue throughout a sapping campaign as goalkeeper Ramsdale needed no reminding.

From BBC ● Apr. 12, 2026

Piper’s talk of exhaustion affected him, too, sapping his strength, making his body feel heavy.

From "Blood of Olympus" by Rick Riordan

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Related Words

• blunt
• deplete
• destroy
• drain
• erode
• exhaust
• impair
• ruin
• undermine
• vitiate
• wreck

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