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

By adding a single diagnostic check before running calculations, an international research team cut processing errors by 54 percent. — Aman Tripathi, Interesting Engineering, 5 Nov. 2026 The new clinic offers a range of services for dogs and cats, including wellness exams, vaccinations, flea and heartworm prevention, microchipping, diagnostic lab work and treatment for basic illnesses. — Ashley Vega, PEOPLE, 5 Nov. 2026

Noun

Tests used in patient care must meet FDA requirements for clinical diagnostics. — Dr. Shravani Durbhakula, Time, 1 Nov. 2026 Another way Colangelo intends to rely on more AI usage involves the integration of a biosciences and diagnostics solutions business that Waters bought from medical technology firm Becton Dickinson. — John Kell, Fortune, 28 Oct. 2026 See All Example Sentences for diagnostic

Recent Examples of Synonyms for diagnostic

Adjective

Pritam never forgot the remark and, with characteristic wit, turned it into the title of her autobiography.

— Tamanna Nangia, Encyclopedia Britannica, 12 Nov. 2026
The former contributes a subtle wheat flavor along with a little Neapolitan-style chew, while the latter lends the crust its characteristic crunch.

— Brock Keeling, Oc Register, 10 Nov. 2026

Definition of characteristic

Noun

Mobile service vehicles for the Miami-Dade Tax Collector’s Office feature jumbo images of Tax Collector Dariel Fernandez, a Republican who was also elected in 2024.

— Douglas Hanks, Miami Herald, 12 Nov. 2026
That leaves a temporary distinction between ChatGPT’s standard voice conversations and its interactive visual features.

— Aamir Khollam, Interesting Engineering, 11 Nov. 2026

Definition of feature

Adjective

The album earned widespread critical acclaim for its intricate arrangements and the distinctive interplay between Lloyd’s and Verlaine’s guitars.

— Mitchell Peters, Billboard, 7 Nov. 2026
By the time of their 1974 debut at CBGB, Verlaine and Hell had recruited Lloyd to be the group’s second guitarist, a move that gave Television its signature and distinctive dueling Strat-versus-Jazzmaster sound.

— Greg Evans, Deadline, 7 Nov. 2026

Definition of distinctive

Noun

Their usefulness depends on the quality of the underlying data, the accuracy of their models, and how well those models represent real-world conditions.

— Kaif Shaikh, Interesting Engineering, 8 Nov. 2026
Considering the quality of opposition coming up, odds for postseason play do not appear to be in KU’s favor.

— Gary Bedore, Kansas City Star, 8 Nov. 2026

Definition of quality

Adjective

That lack of definition extends to the sound of the record, which transforms hyperactively from track to track, echoing the sounds of many other artists without ever quite establishing a distinct profile.

— Aimee Cliff, Pitchfork, 11 Nov. 2026
Filmed in and around guests’ bathrooms, the series features creatives with distinct points of view who have built something of their own, reflecting Jolie’s ties to fashion, design, art, and culture.

— Karin Eldor, Vogue, 11 Nov. 2026

Definition of distinct

Adjective

The first Taibaan film raised THB2 million ($59,000), or THB4 million ($119,000) including marketing, and grossed THB35 million ($1 million), in a market where a typical Thai feature costs THB30 million ($891,000) or more.

— Naman Ramachandran, Variety, 8 Nov. 2026
Vagabond Haven The interior measures 59 sq m (635 sq ft), spread over two floors, offering significantly more room to move around in than a typical towable tiny house.

— New Atlas, New Atlas, 8 Nov. 2026

Definition of typical

Noun

The organization gave the sandwich an overall score of 75, a four out of five nutrition score and a five out of five sensory score, which is based on flavor and texture attributes.

— Sadie Chafe, FOXNews.com, 1 Nov. 2026
And sometimes, the explicit absence of a contradictory signal can provide as much clarity as a matching attribute.

— Filip Popovic, Forbes.com, 30 Oct. 2026

Definition of attribute

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 15 Nov. 2026.

Copy Citation

Synonyms of diagnostic

adjective

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

lissome

Popular in Grammar & Usage

How to Use 'Who' vs. 'Whom'

31 Useful Rhetorical Devices

More Commonly Misspelled Words

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

'Affect' vs. 'Effect'

Popular in Wordplay

Great Big List of Beautiful and Useless Words, Vol. 5

9 Words That Sound Like Insults But Aren't

The Longest Long Words List

The Words of the Week - Nov. 13

Even More Bird Names that Sound Like Insults (and Sometimes Are)

Popular

How to Use 'Who' vs. 'Whom'

Great Big List of Beautiful and Useless Words, Vol. 5

9 Words That Sound Like Insults But Aren't

Games & Quizzes