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
Perhaps the people who should resign are the representatives and senators at the state and national levels who have taken the same oath and betray it by turning a blind eye to the unconstitutional acts committed every day by a lawless regime.
—
Letters To The Editor, Hartford Courant, 17 Feb. 2026
Democrats are warning of unconstitutional federal intervention.
—Kevin Rector, Los Angeles Times, 16 Feb. 2026
Senate Bill 12 is unconstitutional.
—Eleanor Dearman, Fort Worth Star-Telegram, 14 Feb. 2026
The administration has appealed rulings by federal judges in Chicago and Oregon that deemed the deployments unconstitutional.
—Christopher Cann, USA Today, 13 Feb. 2026
See All Example Sentences for unconstitutional
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Letters To The Editor, Hartford Courant, 17 Feb. 2026
Democrats are warning of unconstitutional federal intervention.
—Kevin Rector, Los Angeles Times, 16 Feb. 2026
Senate Bill 12 is unconstitutional.
—Eleanor Dearman, Fort Worth Star-Telegram, 14 Feb. 2026
The administration has appealed rulings by federal judges in Chicago and Oregon that deemed the deployments unconstitutional.
—Christopher Cann, USA Today, 13 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 23 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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