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 ban, which passed in July, has sparked a First Amendment debate, with free speech groups calling it unconstitutional.
—
Brieanna J. Frank, USA Today, 29 Nov. 2025
Most states have since repealed or ignored them—California and Oregon, for example, no longer enforce blue laws, with California’s Supreme Court ruling them unconstitutional for imposing religious observance.
—Sam Stevenson, MSNBC Newsweek, 27 Nov. 2025
Adding to the urgency for more electronic eyes on the road, said Shepard, is the First District Court of Appeal’s ruling earlier this year that the state’s ban on open carry of firearms is unconstitutional.
—David Goodhue, Miami Herald, 26 Nov. 2025
The lawsuits argue that the state's current congressional district boundary lines are unconstitutional and need to be redrawn.
—CBS News, 25 Nov. 2025
See All Example Sentences for unconstitutional
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Brieanna J. Frank, USA Today, 29 Nov. 2025
Most states have since repealed or ignored them—California and Oregon, for example, no longer enforce blue laws, with California’s Supreme Court ruling them unconstitutional for imposing religious observance.
—Sam Stevenson, MSNBC Newsweek, 27 Nov. 2025
Adding to the urgency for more electronic eyes on the road, said Shepard, is the First District Court of Appeal’s ruling earlier this year that the state’s ban on open carry of firearms is unconstitutional.
—David Goodhue, Miami Herald, 26 Nov. 2025
The lawsuits argue that the state's current congressional district boundary lines are unconstitutional and need to be redrawn.
—CBS News, 25 Nov. 2025
See All Example Sentences for unconstitutional
Cite this Entry
“Unconstitutional.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unconstitutional. Accessed 3 Dec. 2025.
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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