English Reference

Word

justify

Phoneticsjus·ti·fy, stress on the first syllable

US/ˈdʒəstəˌfaɪ/

UK/dʒˈʌstɪfˌaɪ/

Definitions

01to explain or defend

B2 · Upper Intermediate Academic

v. to give a good reason for something that people might think is wrong or unnecessary.

v. to provide a valid reason or explanation for an action or belief, especially one that is questioned.

“The manager had to justify the high cost of the new equipment to the owners.”

“The researcher was asked to justify her methodology during the peer-review process to ensure the results were considered credible.”

Usage

Often used with a gerund (e.g., 'justify doing something') or a noun phrase.

02to be a good reason for

B2 · Upper Intermediate

v. to be a strong enough reason to make an action acceptable.

v. to serve as a sufficient warrant or ground for a particular course of action.

“The small increase in speed does not justify the extra risk of an accident.”

“The projected increase in long-term revenue may justify the significant initial investment required for the infrastructure project.”

03to align text

C1 · Advanced Computing Technical

v. to arrange text so that both the left and right sides of the paragraph are straight.

v. to adjust the spaces between words so that lines of type end evenly at both margins.

“You should justify the text in your formal report to make it look professional.”

“The designer chose to justify the body text to create a clean, block-like aesthetic for the magazine layout.”

Usage

Usually used in the context of word processing or graphic design.

Synonyms

04to prove right in law

C1 · Advanced Law Formal · Technical

v. to show in court that someone had a legal reason for what they did.

v. to demonstrate that a defendant had a sufficient legal reason for an act that is the subject of a charge.

“The lawyer tried to justify his client's actions as self-defense.”

“The defendant was able to justify the use of force by proving he was under immediate threat of physical harm.”

Synonyms

exoneratevindicate

Antonyms

05to declare free from sin

C2 · Proficiency Religion Formal · Literary

v. to declare that someone is free from guilt or sin.

v. to declare or render as righteous or free from the penalty of sin.

“In many traditions, faith is what justifies a person before God.”

“The theological debate centered on whether an individual is justified by their faith alone or through their charitable works.”

Synonyms

Antonyms

Collocations

Common phrases and expressions where native English speakers use the word “justify” in context.

Verb

01. justify decision

“The manager was asked to justify his decision to hire more staff during the budget cut.”

verb + noun

Real-World Examples

“A poorly selected target might require so much fuel that the value of the metals brought back would not justify the mission.”
ScienceDaily 7 Aug 2026
“He will justify his price tag if he can repeat that in this campaign.”
BBC News 14 Aug 2026
“Tonda Eckert has kept his job but will need to justify that faith by pushing for a top-two spot.”
The Guardian 13 Aug 2026

Etymology

From Middle English justifien, from Old French justifier, from Late Latin justificare (“make just”), from Latin justus, iustus (“just”) + ficare (“make”), from facere, equivalent to just + -ify.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

VERB

justify(B2)

Domain

Law

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Common
Level
B2 · Upper IntermediateOxford
Updated

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English Reference