obstruct

verb

ob·​struct əb-ˈstrəkt How to pronounce obstruct (audio)
äb-
obstructed; obstructing; obstructs

transitive verb

1
: to block or close up by an obstacle
A piece of food obstructed his airway.
The road was obstructed by a fallen tree.
2
: to hinder from passage, action, or operation : impede
Constant interruptions obstruct our progress.
was charged with obstructing justice by lying to investigators
3
: to cut off from sight
A wall obstructs the view.
obstructive adjective or noun
obstructiveness noun
obstructor noun
Choose the Right Synonym for obstruct

hinder, impede, obstruct, block mean to interfere with the activity or progress of.

hinder stresses causing harmful or annoying delay or interference with progress.

rain hindered the climb

impede implies making forward progress difficult by clogging, hampering, or fettering.

tight clothing that impedes movement

obstruct implies interfering with something in motion or in progress by the sometimes intentional placing of obstacles in the way.

the view was obstructed by billboards

block implies complete obstruction to passage or progress.

a landslide blocked the road

Examples of obstruct in a Sentence

A large tree obstructed the road. A piece of food obstructed his airway and caused him to stop breathing. She was charged with obstructing police. She was charged with obstructing justice by lying to investigators.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Don't tail large vehicles closely - Trucks or buses can kick up a water spray that obstructs visibility. Nc Weather Bot, Charlotte Observer, 30 Apr. 2025 However, cameras often fail in cases where the body is obstructed by blankets or clothes, or when lighting is inadequate. Aly Fathy, The Conversation, 30 Apr. 2025 The muscles of Hend’s heart were weak, while Teddy was born with aortic stenosis, a condition in which the aortic valve is obstructed. Sam Gillette, People.com, 30 Apr. 2025 Separately, the Justice Department is pursuing charges against a Milwaukee judge, accusing them of obstructing immigration agents. Mohammed Soliman, MSNBC Newsweek, 29 Apr. 2025 See All Example Sentences for obstruct

Word History

Etymology

Latin obstructus, past participle of obstruere, from ob- in the way + struere to build, heap up — more at ob-, strew

First Known Use

1590, in the meaning defined at sense 1

Time Traveler
The first known use of obstruct was in 1590

Browse Nearby Words

Cite this Entry

“Obstruct.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/obstruct. Accessed 5 May. 2025.

Kids Definition

obstruct

verb
ob·​struct əb-ˈstrəkt How to pronounce obstruct (audio)
äb-
1
: to close up by an obstacle
a fallen tree obstructed the roadway
2
: to be or get in the way of : hinder
lying to the police obstructs justice

Medical Definition

obstruct

transitive verb
ob·​struct əb-ˈstrəkt, äb- How to pronounce obstruct (audio)
: to block or close up by an obstacle
veins obstructed by clots

More from Merriam-Webster on obstruct

Last Updated: - Updated example sentences
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