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Prepositions after verbs

How to use prepositions with “guarantee”

Guarantee is often used without a preposition, but some combinations are natural in specific meanings, especially guarantee for and guarantee on.

Quick answer

Common patterns with “guarantee”

Guarantee is often transitive: “They guarantee quality.” Guarantee for is used for a person or thing receiving protection or assurance. Guarantee on is common for product warranties. Guarantee to appears in phrases like “guarantee to do something.” Guarantee by and guarantee in are not usual fixed combinations after the verb.

The company offers a guarantee for all repairs.
There is a two-year guarantee on the device.
We guarantee to deliver on time.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
guarantee + noun

Promising a result

Guarantee often takes a direct object with no preposition.

They guarantee fast delivery.
The policy guarantees full compensation.
2
guarantee for + person/thing

Providing assurance or protection

For introduces the person or item covered.

The plan provides a guarantee for renters.
3
guarantee on + product

Talking about warranties

On is common with products and warranty periods.

The shop offers a five-year guarantee on batteries.
4
guarantee to + verb

Promising an action or result

Use to before another verb.

We guarantee to respond within 24 hours.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
guarantee for
They provide a guarantee for all customers.
assurance or protection for someone or something
guarantee on
There is a guarantee on the washing machine.
warranty connected to a product
guarantee to
The airline guarantees to refund cancelled tickets.
promise to perform an action
guarantee by
Not a usual verb-preposition pattern after guarantee.
by may appear separately in passive structures such as “guaranteed by the manufacturer”
guarantee in
Not idiomatic in this meaning.
in is not normally selected by guarantee

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Adding an unnecessary preposition

Guarantee often takes a direct object without a preposition.

✕ They guarantee for fast service. ✓ They guarantee fast service.

Using “by” after active guarantee

By usually appears in passive expressions.

✕ The company guarantees by free replacement. ✓ The company guarantees free replacement.

Confusing “to” patterns

Use to before another verb, not before a noun.

✕ They guarantee to customers refunds. ✓ They guarantee refunds to customers.

Quick practice

Choose the expression that matches the intended meaning.

1. The store offers a three-year guarantee ___ the laptop.
2. We guarantee ___ reply within one business day.
3. The contract guarantees full payment ___ employees.

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Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.

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Frequently asked questions

Can “guarantee” be used without a preposition?

Yes. This is very common, as in “They guarantee quality.”

What is the difference between “guarantee for” and “guarantee on”?

For usually refers to the person or thing protected, while on is common for product warranties.

Is “guarantee by” correct?

Not usually after the active verb. However, passive forms such as “guaranteed by the company” are natural.

gain, from, gain, by "gamble on" or "gamble with"? "gasp for" or "gasp in"? "gather in" or "gather at"? "gaze at" or "gaze into"? generate by, from, in, for or at? get to, into, in, out or on? giggle at, to, about, like or with? "give to", "give in" or "give by"? glance at, through, around, over or in? glare at, from, after, before or in? glean from, by, in, at or for?

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