N-400 interview vocabulary is the set of words a USCIS officer uses while reviewing your naturalization application and testing your English. Most of these words come straight from your Form N-400, and the current edition explains many of the hardest ones in parentheses. The rest come from the civics test and the official USCIS reading and writing vocabulary lists.
Why Vocabulary Matters in the N-400 Interview
The USCIS Policy Manual says the officer judges your speaking from how you answer questions about your eligibility, including questions from your application. If you misunderstand a key word, your answer can sound inconsistent even when your case is fine.
You do not need to know every word. The Policy Manual says you do not have to understand every word or phrase on the application, and you may ask the officer to repeat or rephrase a question.
The N-400 Defines Many Hard Words for You
The current N-400 (edition 01/20/25) puts a plain-language meaning in parentheses after many difficult words. Those meanings are the ones USCIS uses, so they are a good place to start:
| Word on the N-400 | Meaning the form gives |
|---|---|
| advocated | supported and promoted |
| engaged | participated |
| attempted | tried |
| conspired | planned with others |
| assisted | helped |
| incited | encouraged |
| recruited / enlisted / conscripted | asked / signed up / required to join |
| smuggled | trafficked |
| failed to support your dependents | did not pay child support |
| alimony | court-ordered financial support after divorce or separation |
| bear arms | carry weapons |
| noncombatant services | do something that does not include fighting in a war |
The travel section also explains that "day trips" are trips "where the entire trip was completed within 24 hours," which the form tells you not to list.
Core Word Groups to Learn
The words you hear at the interview usually fall into three groups:
- Application words: residence, trip, marital status, dependent, employer, Selective Service
- Background words: arrested, cited, charged, convicted, probation, tax return, child support
- Civics and test words: Constitution, Congress, citizen, rights, vote, government
Common USCIS Words With Simple Meanings
Part 9 of the N-400 asks about any crime or offense you were ever arrested, cited, detained, or charged for, including cases that ended in diversion or deferred adjudication. These plain-language meanings help during practice:
- EVER: at any time in your life, anywhere in the world, unless the question says otherwise. The N-400 gives this meaning itself.
- Continuous residence: keeping your main home in the United States during the required period
- Physical presence: the total time you were physically inside the United States
- Dependent: a person, often a child, you are legally expected to support
- Cited: given an official written notice, such as a traffic ticket
- Detained: held by police or another official, even for a short time
- Charged: formally accused of a crime
- Convicted: found guilty by a court. The N-400 lists pleading guilty separately.
- Probation: a court-ordered period of supervision instead of, or after, jail
- Sealed or expunged: a record a court closed or cleared. The N-400 says you must still disclose it.
You do not need legal wording. You need to understand the question well enough to answer it truthfully. Our guide to N-400 yes-or-no questions explains what each group of Part 9 questions asks.
Official Reading and Writing Vocabulary Lists
USCIS publishes the words used in the English test. The reading vocabulary list and the writing vocabulary list group the words into people, civics, places, holidays, verbs, and other words. The writing list also includes the months that appear in test sentences. Both lists focus on civics and history, as the USCIS interview and test page explains.
How Officers Use Vocabulary in Follow-Up Questions
The Policy Manual says the officer asks follow-up questions to resolve any open issues in your application. For example, after a "yes" to an arrest question, the officer may ask what happened, when, and how the case ended.
Answer in your own words. A memorized definition may not answer the officer's follow-up.
A Short Practice Routine
Work through these steps:
- Highlight unfamiliar words on your own N-400 copy
- Check whether the form gives a meaning in parentheses
- Write a one-sentence meaning in plain English for the rest
- Say a full answer out loud that uses each word
- Repeat with a partner, tutor, or mock interview app
Official Sources
Sources last checked .
- USCIS: Form N-400, Application for Naturalization (edition 01/20/25, PDF)
- USCIS: Policy Manual, Volume 12, Part E, Chapter 2: English and Civics Testing
- USCIS: Reading Vocabulary for the Naturalization Test (PDF)
- USCIS: Writing Vocabulary for the Naturalization Test (PDF)
- USCIS: The Naturalization Interview and Test
- USCIS: Policy Manual, Volume 12, Part B, Chapter 3: Naturalization Examination
Related Articles
- How to Practice the N-400 Interview Out Loud
- N-400 Yes or No Questions Explained: What They Mean in the Citizenship Interview
- Citizenship Interview Questions: What USCIS May Ask
- What Should I Do If I Do Not Understand the USCIS Officer?
Practice with Citizenry
Answer interview questions out loud and get feedback in the app.
