Preposition after adjective

ineligible for, by, due, to or under?

The adjective ineligible is normally followed by for to show that someone does not qualify for something. Other prepositions can appear in separate expressions.

Quick answer

Which preposition follows ineligible?

Use ineligible for when someone cannot receive, enter, or participate in something. Expressions with by, due to, or under usually have different grammatical roles.

She is ineligible for the scholarship.
Applicants under 18 are ineligible for the programme.
He became ineligible for international competition.

Choose the pattern by meaning

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

1
ineligible for + benefit/opportunity

Showing lack of qualification

For is the standard preposition after ineligible.

They are ineligible for financial aid.
The player was declared ineligible for the final match.
2
ineligible due to + reason

Explaining why someone does not qualify

Due to introduces the reason for ineligibility. It is not selected directly by ineligible.

She was ineligible due to incomplete documents.
Several claims were rejected as ineligible due to late submission.
3
ineligible under + rule/law

Referring to regulations or legal categories

Under introduces the rule, policy, or system involved.

The expense is ineligible under current tax law.
Certain workers are ineligible under the agreement.

See the difference in context

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

Construction
Example
Meaning
ineligible for
He is ineligible for the award.
Standard pattern meaning not qualified or not allowed.
ineligible by
The phrase ineligible by itself is uncommon in modern English.
By is not normally the selected preposition after ineligible.
ineligible due to
She was ineligible due to missing information.
Due to gives the reason for the ineligibility.
ineligible to
They were ineligible to vote.
To can be followed by an infinitive expressing an action someone cannot perform.
ineligible under
The claim is ineligible under the new policy.
Under refers to a law, rule, or system.

Common mistakes

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

Using by instead of for

For is the normal preposition after ineligible.

✕ She is ineligible by the grant. ✓ She is ineligible for the grant.

Confusing ineligible for with ineligible to

For is followed by a noun, while to is followed by a verb.

✕ They are ineligible for vote. ✓ They are ineligible to vote.

Treating due to as the main pattern

Due to explains the reason and does not replace for when naming the opportunity.

✕ He is ineligible due to the scholarship. ✓ He is ineligible for the scholarship due to his age.

Omitting the governing rule with under

Under should be followed by a law, policy, or system.

✕ The applicant is ineligible under. ✓ The applicant is ineligible under current regulations.

Quick practice

Choose the expression that matches the intended meaning.

1. She is ineligible ___ the housing programme.
2. The athlete was ineligible ___ compete this season.
3. The expense is ineligible ___ company policy.

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Frequently asked questions

What is the most common preposition after ineligible?

The standard pattern is ineligible for followed by a benefit, opportunity, or activity.

Can I say ineligible to?

Yes. Use ineligible to before a verb, as in ineligible to apply or ineligible to vote.

Is ineligible by correct?

It is generally not idiomatic as the main pattern after ineligible.

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