unconstitutional
adjective
un·con·sti·tu·tion·al
ˌən-ˌkän(t)-stə-ˈtü-sh(ə-)nəl 
-ˈtyü-
: not according or consistent with the constitution of a body politic (such as a nation)
an unconstitutional infringement on rights
unconstitutionally
adverb
Examples of unconstitutional in a Sentence
an unconstitutional infringement of rights
The law may be unconstitutional.
Recent Examples on the Web
The notice formalized a Supreme Court ruling last month that the concessions for the Balboa and Cristobal terminals near the Panama Canal, which Panama Port Company (PPC), a subsidiary of CK Hutchison, had held for more than two decades, were unconstitutional.
—
Anniek Bao, CNBC, 24 Feb. 2026
Panama’s government seized two strategic ports at the Panama Canal after the Supreme Court ruled a Hong Kong company’s operating contract unconstitutional.
—Los Angeles Times, 23 Feb. 2026
That order is possibly unconstitutional, said Carmel Shachar, a health policy scholar at Harvard Law School.
—Darius Tahir, Miami Herald, 23 Feb. 2026
Now, the administration is also facing pushback from two Colorado utilities, which say the federal government's order is both unnecessary and unconstitutional.
—Sam Brasch, NPR, 23 Feb. 2026
See All Example Sentences for unconstitutional
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Anniek Bao, CNBC, 24 Feb. 2026
Panama’s government seized two strategic ports at the Panama Canal after the Supreme Court ruled a Hong Kong company’s operating contract unconstitutional.
—Los Angeles Times, 23 Feb. 2026
That order is possibly unconstitutional, said Carmel Shachar, a health policy scholar at Harvard Law School.
—Darius Tahir, Miami Herald, 23 Feb. 2026
Now, the administration is also facing pushback from two Colorado utilities, which say the federal government's order is both unnecessary and unconstitutional.
—Sam Brasch, NPR, 23 Feb. 2026
See All Example Sentences for unconstitutional
Cite this Entry
“Unconstitutional.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unconstitutional. Accessed 25 Feb. 2026.
Copy CitationKids Definition
unconstitutional
adjective
un·con·sti·tu·tion·al
ˌən-ˌkän(t)-stə-ˈt(y)üsh-nəl
-ən-ᵊl
: not according to or agreeing with the constitution of a state or society
unconstitutionally
adverb
-ˈt(y)üsh-nə-lē,
-ən-ᵊl-ē
Legal Definition
unconstitutional
adjective
un·con·sti·tu·tion·al
ˌən-ˌkän-stə-ˈtü-shə-nəl, -ˈtyü-
: contrary to or failing to comply with a constitution
especially
: violative of a person's rights guaranteed by the U.S. Constitution
an unconstitutional search and seizure
unconstitutionally
adverb
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