The expression be familiar with is a common English collocation used to indicate that someone has knowledge, experience, or an understanding of a particular subject, person, or thing. It suggests a level of acquaintance that ranges from basic recognition to functional proficiency.
While the individual words retain much of their literal meaning, it is considered a semi-idiomatic collocation because "familiar" specifically requires the preposition "with" when the subject is the person who possesses the knowledge. In terms of register, the phrase is neutral to formal, making it equally appropriate for casual conversation, academic requirements, and professional job descriptions.
The grammatical structure follows a consistent verb + adjective + preposition + noun phrase pattern:
Typical objects include software (MATLAB, Python), academic subjects (biology, chemistry), procedures (evacuation routes, warranties), or cultural concepts (a premise, a shtick).
Unlike phrasal verbs, this expression is not separable. You cannot place the object between "familiar" and "with." Furthermore, using the wrong preposition is a frequent error; while something can be "familiar to" you, you must be "familiar with" something. Using verbs other than "be" (or linking verbs like "become" or "seem") will sound unnatural.
These examples are sourced from be familiar with on Ludwig.guru.
"Students are expected to be familiar with MATLAB." — mit.edu
"You should be familiar with Java or C++." — berkeley.edu
"Be familiar with their building evacuation routes." — lowercolumbia.edu
"Employers will expect you to be familiar with their websites." — cornell.edu
"You may be familiar with the shtick." — theguardian.com
Depending on the level of formality or the specific situation, you might want to vary your language.
| Phrase | Context |
|---|---|
| be acquainted with | More formal; often used for social introductions or professional knowledge. |
| be versed in | Suggests a higher level of expertise or skill, often in technical or academic fields. |
| know about | More informal and general; implies basic awareness rather than proficiency. |
| have experience with | Emphasizes practical usage or hands-on time spent with a tool or process. |
| be aware of | Focuses on the existence of something rather than a deep understanding of it. |
| Expression | Meaning | Grammatical Pattern | Register |
|---|---|---|---|
| be familiar with | To have knowledge or experience of something | Subject + be + familiar + with + Object | Neutral / Formal |
No, the components of be familiar with must stay together because it is an adjective phrase rather than a separable phrasal verb. While you can insert an adverb for emphasis, such as "be somewhat familiar with," you cannot place the noun object between the words.
While both phrases mean having knowledge of something, be acquainted with is generally more formal and is frequently used for social relationships. Being familiar with is the more common choice for describing a functional understanding of tools, rules, or academic subjects.
No, this is a common mistake where learners use the wrong preposition. You should say you are familiar with someone to mean you know them; if you say you are "familiar to" them, it means they are the ones who recognize you.
Tools