as in vague
not seen or understood clearly
plagued by undefined worries that kept her awake at night
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Recent Examples of undefined
Create zones that give your patio a purpose The most functional patios don’t try to do everything in one undefined space.
—
Lauren Jarvis-Gibson, Sacbee.com, 30 Apr. 2026
Taken together, these disparate elements have created a new realm of media players that remains largely undefined.
—Caitlin White, Variety, 29 Apr. 2026
Texas regulators flagged dozens of deficiencies in Camp Mystic's emergency plan, saying missing flood maps, unclear evacuation procedures and undefined staff roles could hinder responses during disasters or medical emergencies.
—Doug Myers, CBS News, 24 Apr. 2026
Sid Vangala, senior AI systems engineer and architect at MasTec, said the industry is entering an era where responsibility boundaries are completely undefined.
—Arthur Zaczkiewicz, Footwear News, 20 Apr. 2026
See All Example Sentences for undefined
Lauren Jarvis-Gibson, Sacbee.com, 30 Apr. 2026
Taken together, these disparate elements have created a new realm of media players that remains largely undefined.
—Caitlin White, Variety, 29 Apr. 2026
Texas regulators flagged dozens of deficiencies in Camp Mystic's emergency plan, saying missing flood maps, unclear evacuation procedures and undefined staff roles could hinder responses during disasters or medical emergencies.
—Doug Myers, CBS News, 24 Apr. 2026
Sid Vangala, senior AI systems engineer and architect at MasTec, said the industry is entering an era where responsibility boundaries are completely undefined.
—Arthur Zaczkiewicz, Footwear News, 20 Apr. 2026
See All Example Sentences for undefined
Recent Examples of Synonyms for undefined
Adjective
-
If the team rewards instant replies, unclear meetings, vague ownership, and constant pings, the system will pull everyone back into tempo.—
Gerald J. Leonard,
Forbes.com,
12 June 2026
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Authorities say Boelter, an out-of-work evangelical with conservative views and vague grievances over COVID-19 vaccines, left survivors with life-altering injuries and triggered Minnesota’s largest manhunt before his capture.—
Tim Sullivan,
Los Angeles Times,
11 June 2026
Adjective
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If the aurora is faint, a smartphone camera can often reveal colors and structures that are difficult to see with the naked eye, during weaker displays.—
Daisy Dobrijevic,
Space.com,
8 June 2026
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All there is to Lyra is Vega and a small parallelogram of fainter stars to the lower right.—
Mike Lynch,
Twin Cities,
7 June 2026
Cite this Entry
“Undefined.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undefined. Accessed 15 Jun. 2026.
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