functionality

British  

/ ˌfʌŋkʃənˈælɪtɪ /

noun

1. the quality of being functional

2. computing a function or range of functions in a computer, program, package, etc

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Explanation

The functionality of something is its usefulness, or how well it does the job it's meant to do. You might question the functionality of your new smartphone if you can't get it to send simple text messages. The noun functionality is often used to talk about technology and the new things it's capable of: "The functionality of the new computer model is incredible!" But you can also use it in a general way, to mean "practicality" or "capability." So you might admire the functionality of your neighbor's very basic, simple backyard grill (as opposed to your fancy gas model), which works perfectly well to cook hamburgers.

Example Sentences

Amazon said on Tuesday that it had also reached an agreement with Apple to continue offering the "SOS" functionality on its mobile devices.

From BBC • Apr. 14, 2026

We’d play at a dive bar or play at a wedding, but my childhood friendships were linked to to the functionality of music in my life.

From Los Angeles Times • Mar. 30, 2026

“As enterprises start putting more critical functionality in the hands of AI, they will want control of AI agents or of their AI infrastructure, and that requires more security,” Arora said.

From Barron's • Mar. 27, 2026

Before AI systems are even put on the market, the AI Act alone requires predeployment risk assessments and mitigation systems, high-quality data sets, detailed logs, documentation of system functionality, and human oversight.

From The Wall Street Journal • Mar. 23, 2026

He volunteered to be one of six people in the country to go under the knife for experimental brain surgery that would possibly provide him with a few more years of functionality.

From "Geeks: How Two Lost Boys Rode the Internet Out of Idaho" by Jon Katz