UNDERHANDEDLY Synonyms: 27 Similar and Opposite Words

underhandedly

adverb

Definition of underhandedly

as in surreptitiously

Related Words

Relevance

Dissimilar Words

Example Sentences

Recent Examples of Synonyms for underhandedly

Adverb

In the first image above, Wardle can be seen using a simple terminal command to surreptitiously send a prompt to the Meta endpoint.

— Dan Goodin, ArsTechnica, 21 Sep. 2026
There has been a string of alarming incidents in which swarms of rogue AI agents have hacked online platforms such as Hugging Face and surreptitiously communicated with one another on message boards.

— Sebastian Herrera, Fortune, 14 Sep. 2026

Definition of surreptitiously

Adverb

The spread of the video was aided by clippers, accounts that post hundreds of clips in a single day and are paid by companies to stealthily link these viral moments to their platforms.

— CT Jones, Rolling Stone, 11 Sep. 2026
Wolf’s Shinobi Prosthetic houses a grappling hook for scaling rooftops, leaping between trees, and approaching enemies stealthily.

— Aman Kumar, Encyclopedia Britannica, 27 Aug. 2026

Definition of stealthily

Adverb

Bieber sneakily unveiled her new hair late last week, posting a mirror selfie with a white heart emoji to her Instagram Stories.

— Kaleigh Werner, Footwear News, 29 Sep. 2026
Another Gamers Nexus investigation last month found that LG monitors were sneakily installing pop-up ads onto customers’ computers.

— Frank Landymore, Futurism, 10 Sep. 2026

Definition of sneakily

Adverb

The state, in partnership with the federal government, built the camp quickly and secretively and opened it in July.

— Eve Samples, The Orlando Sentinel, 12 June 2026
Early modern Europe was not an ideal place to enforce intellectual property rights, which in those days existed only when technologies could be secretively monopolized by a guild.

— Niall Ferguson, Foreign Affairs, 15 Aug. 2017

Definition of secretively

Adverb

There are cities where rats are glimpsed at night, furtively scurrying into a dark corner or among the train tracks.

— David A. Graham, The Atlantic, 18 Sep. 2026
Jordan may wish to exact revenge, and Eddy may want to find one of the victims who has vanished, but both have to go about their work furtively.

— Los Angeles Times, Los Angeles Times, 1 Sep. 2026

Definition of furtively

Adverb

That’s progress but doesn’t really address people’s primary concerns about the glasses being used to covertly record people in public.

— Victoria Song, The Verge, 23 Sep. 2026
Because submarines can operate covertly for extended periods, additional missile capacity can give commanders greater flexibility while keeping the launch platform difficult to detect.

— Prabhat Ranjan Mishra, Interesting Engineering, 17 Sep. 2026

Definition of covertly

Adverb

Because Iran is a theocratic dictatorship that routinely arrests and in some cases executes journalists, Western reporters hoping to cover the country must either work clandestinely or submit to government supervision.

— James Kirchick, The Atlantic, 29 July 2026
Soon afterward, social media commenters were speculating about whether Sierra broke into the office or was caught clandestinely shredding documents.

— Don Stacom, Hartford Courant, 10 July 2026

Definition of clandestinely

Adverb

Each team will alternate tossing the bean bag underhand onto the board until all four bean bags are thrown.

— Anthony Gharib, USA TODAY, 13 June 2023
Pitchers tossed underhand and no one wore gloves yet, resulting in smarting pain in the hands of catchers and first basemen.

— Jeff Suess, The Enquirer, 29 Mar. 2023

Definition of underhand

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.

Browse Nearby Words

underhanded

underhandedly

underhandedness

See all Nearby Words

Cite this Entry

Style

“Underhandedly.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underhandedly. Accessed 1 Oct. 2026.

Copy Citation

Synonyms of underhandedly

adverb

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

slew

Popular in Grammar & Usage

Do You Need a New Language Peeve?

More Commonly Mispronounced Words

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

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

7 Great Ways to Say 'Great'

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

12 Lovely and Unusual Words for the Natural World

Why do we 'bury the lede?'

Popular

Do You Need a New Language Peeve?

7 Great Ways to Say 'Great'

The Longest Long Words List

Games & Quizzes