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Prepositions after adjectives

conversant with or conversant in?

Conversant is a formal adjective meaning familiar or knowledgeable. Both conversant with and conversant in are used, with slightly different focuses.

Quick answer

Conversant with vs. conversant in

Use conversant with for familiarity with a subject, system, or person. Use conversant in mainly for skill or knowledge within a field, language, or discipline. Conversant with is more common in modern English.

She is conversant with the new regulations.
He is conversant in classical Arabic.
Our team is conversant with cloud security systems.

Choose the pattern by meaning

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

1
conversant with + subject

Showing familiarity with something

Use conversant with for knowledge of a topic, process, system, or area.

The lawyer is conversant with tax law.
Are you conversant with this software?
2
conversant with + person/group

Showing familiarity with people

Conversant with can also describe familiarity with people or their work.

She is conversant with the committee members.
The editor is conversant with local writers.
3
conversant in + field/language

Showing knowledge within a discipline

Conversant in is formal and often used for competence in a field, language, or subject area.

He is conversant in international law.
The researcher is conversant in Mandarin Chinese.

See the difference in context

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

Construction
Example
Meaning
conversant with
She is conversant with digital marketing.
Familiar with or knowledgeable about something.
conversant in
He is conversant in several programming languages.
Skilled or knowledgeable within a field or language.
familiar with
I am familiar with the procedure.
Less formal alternative to conversant with.
skilled in
They are skilled in data analysis.
Emphasises ability rather than familiarity.

Common mistakes

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

Using conversant as a verb

Conversant is an adjective, not a verb.

✕ She conversants with the topic. ✓ She is conversant with the topic.

Using with and in interchangeably in every context

With is broader and more common. In is more formal and often linked to fields or languages.

✕ He is conversant in his neighbours. ✓ He is conversant with his neighbours.

Using conversant in informal situations

Conversant is formal and may sound stiff in casual speech.

✕ I'm conversant with this game. ✓ I'm familiar with this game.

Quick practice

Choose the expression that matches the intended meaning.

1. The consultant is conversant ___ financial regulations.
2. She is conversant ___ Japanese law.
3. Are you conversant ___ the new reporting system?

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Frequently asked questions

Is conversant with more common than conversant in?

Yes. Conversant with is broader and more common in current English.

Can conversant describe language ability?

Yes. Conversant in or conversant with a language can both appear in formal English.

Is conversant formal?

Yes. In everyday conversation, speakers often prefer familiar with or knowledgeable about.

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