siphon off

secretly take money or things from a company little by little

C2

What does "siphon sth off" mean?

To siphon off money or resources means to steal them from an organisation in a covert, systematic way over an extended period. The wrongdoing is rarely a single act — the defining quality is that funds are drained away gradually, often going undetected for months or years. The metaphor comes from the physical action of a siphon, which draws liquid out slowly and continuously, and this image captures the sense of hidden, sustained extraction perfectly. The phrasal verb appears almost exclusively in financial and legal contexts — journalism, court reporting, audits, and political commentary — and almost always collocates with words like funds, profits, public money, or assets. Because the crime typically only comes to light after the fact, the verb pairs naturally with time expressions such as 'for years', 'over a decade', or 'throughout his tenure', and with past perfect or past perfect continuous constructions.

Examples

How to use it

siphon off + money/funds/resources

The most common pattern: the object — always a financial or resource noun — follows the particle.

The regional director had been siphoning off aid funds for the better part of a decade before the audit uncovered the scheme.

siphon + object + off

Separation is possible when the object is a short noun phrase, and is often used for stylistic emphasis.

He siphoned the profits off so methodically that the discrepancies were buried deep in the accounts.

siphon + pronoun + off

When referring back to money or resources already mentioned, pronoun objects must sit between the verb and particle — this is obligatory.

Once the offshore account was set up, she began siphoning it off in small, irregular transfers to avoid detection.

be siphoned off + into/from + place

The passive is very natural, especially in investigative or legal writing where the focus is on what was taken rather than who took it.

It later emerged that hundreds of thousands of pounds had been siphoned off into accounts held under fictitious names.

siphon off + object + for + time period

Time expressions are a near-constant companion, reinforcing the gradual, sustained nature of the wrongdoing.

The treasurer had been siphoning off public money for over three years before a routine inspection flagged the irregularities.

Common Collocations

siphon off fundssiphon off moneysiphon off profitssiphon off millionssiphon off public moneysiphon off resources

Common Mistakes

Missing object

'Siphon off' always requires an object — it cannot be used intransitively. You must specify what is being taken.

✗ He had been siphoning off for years without anyone noticing.
✓ He had been siphoning off funds for years without anyone noticing.
Pronoun placed after the particle

When the object is a pronoun, it must go between the verb and the particle, not after 'off'.

✗ Once the board found out about the donations, they confirmed that someone had been siphoning off them.
✓ Once the board found out about the donations, they confirmed that someone had been siphoning them off.
Confusing 'siphon off' with 'skim off'

'Skim off' typically suggests taking a small percentage repeatedly, often from the top of a sum. 'Siphon off' implies a more covert, systematic draining of larger or more substantial amounts over time — the two are not fully interchangeable.

✗ He skimmed off millions from the pension fund over a decade in what prosecutors called an elaborate fraud.
✓ He siphoned off millions from the pension fund over a decade in what prosecutors called an elaborate fraud.

Usage

This phrasal verb is formal and mostly appears in journalism, legal contexts, and financial reporting. It strongly implies that the theft happened gradually over a long period, so it pairs naturally with time expressions like 'for years' or 'over a decade' and with past perfect continuous tenses.

Frequently Asked Questions

Does 'siphon off' always involve dishonesty, or can it be used neutrally?

In the vast majority of contexts, 'siphon off' carries a clear implication of deception and wrongdoing — it describes covert financial theft, not legitimate transfers. There is a rarer, neutral sense involving diverting flows (such as redirecting customers or traffic), but this is far less common and the dishonest financial sense dominates. If you encounter or use 'siphon off' without any context of misconduct, there is a real risk of being misunderstood.

Why does 'siphon off' sound unnatural in the present simple — for example, 'He siphons off funds every month'?

Because 'siphon off' describes covert wrongdoing, it almost always appears in contexts where the crime has already been discovered and is being reported or investigated — which pushes it into past and perfect tenses. Using the present simple implies the action is known and routine, which conflicts with the secrecy the verb implies. Tenses like the past perfect continuous ('had been siphoning off') are far more natural because they capture both the duration and the fact that the activity has now come to light.

Is 'siphon off' suitable for formal writing, such as legal documents or journalism?

'Siphon off' is primarily a formal verb and is very well-suited to journalism, financial reporting, legal commentary, and investigative writing. It would be out of place in casual conversation, but it is precisely the kind of language you would expect to find in a newspaper article about corporate fraud or in a court document describing misappropriation of funds.

What kinds of things can be 'siphoned off'? Is it only money?

The vast majority of collocations involve financial vocabulary: funds, profits, cash, millions, public money, aid, donations, assets, and revenue are all common objects. 'Resources' is also possible, though slightly more abstract. The verb is rarely used with non-financial objects in this dishonest sense — if you are not talking about money or something of monetary value being covertly misappropriated, a different verb is probably more appropriate.

What is the difference between 'siphon off' and 'embezzle'?

'Embezzle' is the single-verb legal equivalent and appears frequently in formal legal and financial contexts to describe the same core act. 'Siphon off', as a phrasal verb, carries a stronger visual metaphor — the sense of slow, hidden draining — and tends to emphasise the gradual, sustained nature of the theft more vividly. Both are formal, but 'siphon off' is more common in journalistic writing, while 'embezzle' dominates strictly legal language.

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