blocker

Stops things through

A blocker is something or someone that blocks—obstructing passage, progress, or action.

In medicine, beta blockers and calcium channel blockers are drugs that inhibit specific physiological processes.

In football, a blocker creates space by obstructing defenders.

In software development, a blocker is an issue preventing progress on a task: We can't launch until we resolve this blocker.

An ad blocker prevents advertisements from displaying.

obstacle

impediment

Thing that obstructs progress

bottleneck · snag · hurdle · constraint · restriction · limitation · deterrent · setback · complication · difficulty

medical

clot

Coagulated mass

stenosis · plaque · artery · congestion · antihistamine · receptor · inhibitor · antagonist · cholesterol · coagulation

sports

goalie

Net-guarding player

defenseman · rebounder · sweeper · fullback · safety · cornerback · guard · enforcer · check · screen

barrier

barricade

Obstacle blocking a path

  • wallVertical enclosing structure
  • fenceBoundary structure between properties
  • gateHinged barrier in fence

partition · screen · shield · buffer · divider · bollard · checkpoint · cordon · perimeter · obstruction

digital

firewall

Network access control system

extension · plugin · browser · privacy · cookies · scripts

theater

staging

Preparing for presentation

tape · position · movement · director · scene · cue · entrance · exit · upstage · downstage

Categories
Opposites
facilitation vs. obstruction

blockerenabler

One who facilitates harmful behavior

facilitator · catalyst · promoter · accelerator · helper

PROTECTION VS. EXPOSURE (sports/physical)

blockerrusher

One who moves hastily

attacker · charger · ball carrier · scorer · striker

INHIBITION VS. ACTIVATION (biochemical/pharmacological)

blockeragonist

Receptor-binding trigger molecule

activator · inducer · stimulant · stimulator · enhancer

Phrases
Family

block, blocked, blocking, blockage, blocks, blockade, blockhead, roadblock, unblocked

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G