Synonyms

proportionality

American

[pruh-pawr-shuh-nal-i-tee] / prəˌpɔr ʃəˈnæl ɪ ti /

noun

the fact or quality of being in proper balance or relation as to size or quantity, degree, severity, etc..

Even a defensive response to an unjust attack may go far beyond legitimate defense if it causes destruction that violates the principle of proportionality.

Etymology

Origin of proportionality

First recorded in 1425–75 in a different sense; proportional ( def. ) + -ity ( def. )

Vocabulary lists containing proportionality

Ratios and Proportional Relationships

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Geometry - High School

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Geometry (Base List)

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Each and every attack must comply with international humanitarian law fundamental principles of distinction, proportionality and precautions to protect civilians," he said.

From Barron's • Apr. 8, 2026

The European Commission will check the aid’s proportionality and its effect on competition, fearing it may reinforce EDF’s market power.

From The Wall Street Journal • Mar. 31, 2026

A second principle that limits when deadly force can legally be used is proportionality: Shooting someone is only justified when it is a proportional response to the perceived threat.

From Slate • Mar. 27, 2026

But where “The Monkey’s” snide sense of humor about its kills quickly grew smug, this time Perkins’ light touch — even during the most frightening moments — gives this slight film just the right proportionality.

From Los Angeles Times • Nov. 14, 2025

This inverse proportionality between apparent size and distance is the basis of perspective in art and photography.

From "Cosmos" by Carl Sagan

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023