Intermediate (B1)
IPA: /ˈfʌŋkʃənl/
KK: /ˈfʌŋkʃənl/
Definition
Able to work or perform a specific task; designed for a particular purpose.
Example
The new software is highly functional and meets all our needs.
Conversation

I just got a new desk that is really functional for my workspace.

That sounds great! What features does it have?

It has a lot of storage and a big surface area for my laptop.

Nice! A functional desk can really help with productivity.
Synonyms & Antonyms
Synonyms
practical
usable
operational
Antonyms
impractical
dysfunctional
ineffective
Definition
A mathematical relationship that describes how one quantity depends on another, often represented by an equation.
Example
In mathematics, a functional can be used to analyze the behavior of different functions.
Conversation

Have you ever thought about what makes a good functional design?

Yeah, I think it should be both practical and aesthetically pleasing.

Exactly! A design isn't truly great unless it's functional in everyday use.
Root Explanation
Functional → It is formed from "functio" (from Latin, meaning performance or execution) and the suffix "-al" (meaning relating to). The word "functional" refers to something that relates to or is capable of performing a specific function or task.
Memory Tip
Think of 'function' as a performance or task, and remember that 'functional' means relating to that performance.
Visually Confused Words
afunctional
unctional
unfunctional
junctional
subfunctional
prefunctional
nonfunctional
unsectional