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

What’s Happening The Bristol Stool Scale, developed in 1997, classifies stool into seven forms, ranging from small hard pellets to watery diarrhea, and functions as a standard diagnostic tool in gastroenterology. — Hanna Wickes, Miami Herald, 28 Aug. 2026 Depending on the policy, coverage can differ for diagnostic testing, hereditary or congenital conditions, prescription medications, rehabilitation, behavioral treatment and other types of care. — Angelica Leicht, CBS News, 27 Aug. 2026

Noun

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 When a problem gets this big, such simple diagnostics can be invaluable for grounding solutions in reality. — The Editorial Board, Chicago Tribune, 13 Aug. 2026 See All Example Sentences for diagnostic

Recent Examples of Synonyms for diagnostic

Adjective

If physical gestures serve our relatives just fine, why did our own branch of the family tree gradually favor biological changes in our brains and anatomy that permitted our characteristic complexities in language and precision in speech?

— Mike McRae September 02, New Atlas, 3 Sep. 2026
And in relation to me and Baba—so much of that inability to express affection is characteristic of son-father relationships in Arab families and has so much to do with how both of us were taught what a man should behave like.

— Literary Hub, Literary Hub, 2 Sep. 2026

Definition of characteristic

Noun

The Grand Highlander has the roomiest third row of the three family SUVs and the Telluride is the best in terms of cabin quality, standard tech and features.

— Charles Singh, USA Today, 1 Sep. 2026
Since this is an Android Drop rather than a Pixel Drop, these features are coming to a wider range of devices.

— Ryan Whitwam, ArsTechnica, 1 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

Transplants of muscle stem cells are a promising avenue for research, having distinct advantages over other tissues in their ability to encourage the growth of new blood vessels and limitations on rapid growth.

— Mike McRae September 02, New Atlas, 3 Sep. 2026
Meanwhile, active adult rental has begun to emerge as a distinct property type.

— Nia Bowers, USA Today, 2 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

Its technology has also reached production at volumes far beyond typical nuclear manufacturing.

— Aamir Khollam, Interesting Engineering, 2 Sep. 2026
On top of that over the last two weeks of August, a trough over the eastern Pacific was bringing in even heavier rain than typical for multiple days in a row, Weiss said.

— Janet Loehrke, USA Today, 1 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 9 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

stigma

Popular in Grammar & Usage

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

A List of Most Commonly Confused Words

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

The Longest Long Words List

Stay Woke

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

14 Phobias You Probably Haven't Heard Of

The Words of the Week - Sept. 4

Popular

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

The Longest Long Words List

Stay Woke

Games & Quizzes