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Definitions

block

[blok] / blɒk /
NOUN
mass of material
Synonyms
STRONGEST
bar brick chunk piece section slab square
STRONG
cake cube hunk ingot loaf lump oblong segment slice solid
Antonyms
STRONGEST
whole
WEAK
opening
NOUN
obstruction
Synonyms
STRONGEST
bar barrier chunk roadblock wall
STRONG
blockage clog hang-up hindrance impediment jam mass obstacle obstruction snag stop stoppage
WEAK
blank wall
Antonyms
STRONG
advantage aid assistance beginning clearance continuation go help promotion start support
WEAK
opening
VERB
obstruct
Synonyms
STRONGEST
arrest bar blockade clog close close off cut off deter halt hinder hold up impede intercept prevent stall stop thwart
STRONG
barricade brake catch charge check choke congest dam dead-end fill occlude plug stonewall stopper stymie tackle
WEAK
block out close out hang up interfere with shut off shut out stop up take out of play
Antonyms
STRONGEST
advance aid allow assist begin continue encourage facilitate forward further give help let go open permit promote push release start support unstop
STRONG
free liberate unblock
WEAK
let up

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Court of Appeals for the District of Columbia Circuit declined to block the new plan on an emergency basis, and rapidly calendared the case for oral argument.

From Slate • Apr. 21, 2026

It will be a building block and a key ingredient in every new “unicorn” — a company with a valuation of at least $1 billion.

From MarketWatch • Apr. 21, 2026

Such a deal could also attract lawsuits from customers, which could block it from coming to fruition.

From The Wall Street Journal • Apr. 20, 2026

The Home Office has previously intervened to block visas for public figures whose presence in the UK it views as potentially inflammatory.

From BBC • Apr. 20, 2026

Something electrical exploded in a shower of sparks a block away and made them both jump.

From "Two Degrees" by Alan Gratz

Vocabulary lists containing block

Chapter 27: America and World War II

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