DIAGNOSTICAL Synonyms: 72 Similar and Opposite Words

diagnostic 1 of 2

adjective

ˌdī-ig-ˈnä-stik

variants also diagnostical

Definition of diagnostic

as in characteristic

serving to identify as belonging to an individual or group studies that show that cultural diversity is a diagnostic feature of a thriving city

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

diagnostic

2 of 2

noun

as in feature

something that sets apart an individual from others of the same kind the thesis that moral decline is the infallible diagnostic of a decadent society

Synonyms & Similar Words

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of diagnostic

Adjective

All decisions - legal, medical, diagnostic and monetary awards - are made independently of the NFL and overseen by the court. — Varun Mehta, ABC News, 4 Sep. 2026 Where To Start The three questions above point toward a diagnostic, not an overhaul. — Philip Brittan, Forbes.com, 4 Sep. 2026

Noun

Many check in specifically for the property’s preventative medicine and longevity programs, spending their days rotating between diagnostics, consultations, and treatments while still enjoying the comforts of a grand European resort. — Abby Montanez, Robb Report, 23 Aug. 2026 The diagnostics kit is available on a subscription basis — four times a year, twice a year or once a year — starting at the equivalent of $500. — Noelle Harff, San Diego Union-Tribune, 19 Aug. 2026 See All Example Sentences for diagnostic

Recent Examples of Synonyms for diagnostic

Adjective

Measles is a highly contagious airborne disease that causes fever, respiratory symptoms and a characteristic rash.

— JULHAS ALAM, Arkansas Online, 10 Sep. 2026
As a vascular pathogen, wilting and dieback are characteristic symptoms of disease, accompanied by necrotic patches on bark and branches.

— Emily Leahy, Hartford Courant, 7 Sep. 2026

Definition of characteristic

Noun

Factory floor gets smarter One of the main features planned for BIC North is ASML’s new flow factory, a manufacturing model designed for its TWINSCAN lithography systems.

— Neetika Walter, Interesting Engineering, 9 Sep. 2026
When the device is closed, a smaller exterior screen on the front cover provides quick access to key apps and features.

— Alexei Oreskovic, Fortune, 8 Sep. 2026

Definition of feature

Adjective

That copper complex is also responsible for the formula’s distinctive blue hue, while glycerin and two forms of hyaluronic acid draw in moisture for an immediate plumping effect.

— Christa Joanna Lee, Allure, 6 Sep. 2026
During the traditional preparation process, calcium is added, which gives the jelly its distinctive firm and rubbery texture.

— Michiko Tomioka, CNBC, 5 Sep. 2026

Definition of distinctive

Noun

Researchers need to establish what remains in the purified water and whether those substances could affect drug quality or patient safety.

— Neetika Walter, Interesting Engineering, 8 Sep. 2026
As the pair chase show jumping immortality this weekend, those are the qualities that will be needed to make history.

— Danielle Rossingh, New York Times, 8 Sep. 2026

Definition of quality

Adjective

Celebrating three decades at Bergdorf’s, Fargo helped define style through her distinct visual storytelling and fashion curation while being an influential champion of American fashion.

— Lisa Lockwood, Footwear News, 9 Sep. 2026
Elsewhere, dining ranges from casual beachside fare and an award-winning bar serving signature cocktails to the Agave Study, where guests can explore the spirit’s provenance, production, and distinct character.

— Robb Report Studio, Robb Report, 9 Sep. 2026

Definition of distinct

Noun

Other soccer-like traits at Ryan Field include a very high proportion of the seats being under cover and the striking sight that what Americans across the land have come to know as the Upper Deck experience just does not exist here.

— The Editorial Board, Chicago Tribune, 6 Sep. 2026
His ability to square the ball up and not chase out of the strike zone are probably his best traits.

— Jim Bowden, New York Times, 4 Sep. 2026

Definition of trait

Adjective

In typical Zheng fashion, she’s been upfront about what she’s learned as she’s begun the long climb back to the top of the sport.

— Ava Wallace, New York Times, 9 Sep. 2026
Look forward to a more comfortable return to typical or even slightly below-average temperatures this weekend and next week.

— Sean Macaday, Sacbee.com, 8 Sep. 2026

Definition of typical

Browse Nearby Words

diagnosis

diagnostic

diagnostics

See all Nearby Words

Cite this Entry

Style

“Diagnostic.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/diagnostic. Accessed 12 Sep. 2026.

Copy Citation

Synonyms of diagnostic

adjective

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

hobnob

Popular in Grammar & Usage

Merriam-Webster’s Great Big List of Words You Love to Hate

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Why do we use apostrophes to show possession?

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?

Popular in Wordplay

9 Words That Sound Like Insults But Aren't

Back to School Vocabulary

Words from the 'Odyssey'

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Popular

Merriam-Webster’s Great Big List of Words You Love to Hate

9 Words That Sound Like Insults But Aren't

Back to School Vocabulary

Games & Quizzes