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Prepositions after adjectives

Dominant: which preposition to use

Dominant is commonly followed by in for areas of activity and over for control or superiority.

Quick answer

Most natural patterns with dominant

Use dominant in for fields, markets, or activities. Use dominant over for control, influence, or superiority. For, at, and on are less common directly after dominant and usually belong to a wider phrase.

The company is dominant in the software market.
That team remained dominant over its rivals.
Mobile devices are dominant in everyday communication.

Choose the pattern by meaning

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

1
dominant in + field/area

Showing strength within an area

Use in for industries, subjects, activities, or locations.

The brand is dominant in Asia.
She became dominant in international tennis.
2
dominant over + person/group

Showing control or superiority

Use over when one person, group, or thing has power or advantage over another.

The firm is dominant over smaller competitors.
He was dominant over the discussion.
3
dominant for + purpose

Referring to suitability or relevance

For is not usually a fixed complement after dominant, but it may appear in wider structures.

This platform is popular for online teaching.
The species is known for its size.
4
dominant at/on + place/topic

Describing location or topic

At and on usually keep their normal meanings of place or topic rather than forming fixed patterns with dominant.

The company remained dominant at the trade fair.
One theme was dominant on social media.

See the difference in context

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

Construction
Example
Meaning
dominant in something
The company is dominant in the local market.
strongest or most influential within an area
dominant over someone
The empire was dominant over neighbouring regions.
having control or superiority
dominant for something
This is uncommon as a direct pattern with dominant.
for usually belongs to another part of the sentence
dominant at something
The athlete was dominant at the tournament.
success in a place or event
dominant on something
The issue became dominant on television news.
prominent on a platform or topic area

Common mistakes

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

Using dominant over for fields

Use in for industries, subjects, or regions.

✕ The brand is dominant over the smartphone market. ✓ The brand is dominant in the smartphone market.

Using dominant in for people controlled

Use over for power or superiority over others.

✕ He was dominant in his opponents. ✓ He was dominant over his opponents.

Treating for as a fixed adjective pattern

For is usually part of another phrase.

✕ The company is dominant for Europe. ✓ The company is dominant in Europe.

Confusing place and control meanings

At usually refers to an event or location, not power relationships.

✕ The country was dominant at its neighbours. ✓ The country was dominant over its neighbours.

Quick practice

Choose the expression that matches the intended meaning.

1. The company is dominant ___ cloud computing.
2. The champion remained dominant ___ all opponents.
3. One topic became dominant ___ online discussions.

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Frequently asked questions

Do we say dominant in or dominant over?

Use dominant in for fields or areas and dominant over for people, groups, or competitors.

Can dominant be followed by on?

Yes, especially when referring to media, platforms, or topics, such as dominant on social media.

Is dominant for correct?

It is uncommon as a direct pattern after dominant. In or over are usually more natural.

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