1. people or things that cancel something
Usage: plural of canceler
2. devices or systems that eliminate unwanted signals or effects
Usage: technical

Examples

• The event organizers were disappointed by the number of last-minute cancelers.
• Noise cancelers in headphones block out background sounds.
• The airline charged fees to frequent cancelers of reservations.
• Echo cancelers improve the quality of phone calls.
• Wedding planners often deal with cancelers during busy seasons.
• Active noise cancelers use technology to reduce unwanted audio.