preempt

verb

pre·​empt prē-ˈem(p)t 

preempted; preempting; preempts

transitive verb

1

: to acquire (something, such as land) by preemption

2

: to seize upon to the exclusion of others : take for oneself

the movement was then preempted by a lunatic fringe

3

a

: to replace with something considered to be of greater value or priority : take precedence over

… the program did not appear, having been preempted by a baseball game.

—Robert MacNeil

b

law : to replace or supersede (a law) or bar (an action) by the doctrine of preemption

In so doing, the Court held that Congress did not intend to preempt common law contract claims.

—Charas v. Trans World Airlines, Inc., 160 F.3d 1259 (1998)

4

: to gain a commanding or preeminent place in

5

: to prevent from happening or taking place : forestall, preclude

intransitive verb

: to make a preemptive bid in bridge

preemptor

prē-ˈem(p)-tər 

noun

Synonyms of preempt

• seize
• usurp
• confiscate
• grab
• steal
• claim
• convert
• occupy

Examples of preempt in a Sentence

The contract preempts lawsuits by the company's clients.

The state law was preempted by a federal law.

The President's speech preempted regular programming.

Recent Examples on the Web

The exemption could also preempt state antitrust claims, which would likely hold up in court. —Michael McCann, Sportico.com, 10 Mar. 2026

Lawmakers recently spent hours arguing over measures to preempt local governments from funding activities that fall under a vague and broad definition of diversity, equality and inclusion, stop them from restricting greenhouse gases, and prevent them from regulating urban sprawl. —Jeffrey Schweers, The Orlando Sentinel, 8 Mar. 2026

That bill, among other things, would preempt state regulation of NIL payments. —Dan Mangan, CNBC, 6 Mar. 2026

Last year, a Tennessee lawmaker introduced a bill that would temporarily preempt certain lawsuits against Abbott and other manufacturers of specialized formulas for preterm infants while the FDA studies the issue. —Lisa Schencker, Chicago Tribune, 4 Mar. 2026

Word History

Etymology

back-formation from preemption

First Known Use

1850, in the meaning defined at transitive sense 1

Rhymes for preempt

• attempt
• contempt
• exempt
• unkempt
• empt
• tempt
• nonexempt

Kids Definition

preempt

verb

pre·​empt prē-ˈem(p)t 

1

a

: to settle upon (as public land) with the right to purchase before others

b

: to take by such a right

2

: to take before someone else can : appropriate

preempt a seat at the stadium

3

: to take the place of

the president's speech preempted the regular program

preemption

-ˈem(p)-shən

noun

preemptive

-ˈem(p)-tiv

adjective

preemptor

-tər 

noun

Legal Definition

preempt

transitive verb

pre·​empt prē-ˈempt 

1

a

: to acquire (land) by preemption

b

: to seize upon to the exclusion of others : take for oneself

a senior user of a trademark could not preempt use of the mark in remote geographical markets

—Mesa Springs Enterprises v. Cutco Indus., 736 P.2d 1251 (1986)

2

a

: to replace or supersede (a law) by preemption

such state laws are not preempted by the federal Energy Reorganization Act of 1974

—National Law Journal

b

: to preclude or bar (an action) by preemption

federal airline deregulation does not preempt claims under state contract law

—National Law Journal