Intermediate (B1)
IPA: /dɪˈkʌpəl/
KK: /dɪˈkʌpəl/
Definition
Relating to or consisting of ten parts or members; ten times as much in size, strength, number, or amount.
Example
The decuple increase in production surprised everyone at the factory.
Conversation

Did you know that this project requires a decuple amount of data compared to last year?

Wow, that's a lot! I didn't realize it was that intense.

Yeah, we need to gather ten times more information to meet the goals.

I guess we'll have to work together to make it happen.
Synonyms & Antonyms
Definition
A quantity that is ten times larger than another quantity.
Example
The decuple increase in sales surprised everyone at the meeting.
Conversation

Did you hear about the new fundraiser?

Yeah, I heard they want to raise a decuple amount compared to last year.

That's ambitious! I hope they can actually pull it off.
Definition
To increase something by a factor of ten or to make it ten times larger.
Example
The company's profits decupled after the successful product launch.
Tense Forms
Past: decupled
Past Participle: decupled
Conversation

Did you know that if we decuple this recipe, we can feed the whole party?

That's a great idea! We definitely need more food.

Yeah, I was thinking we should also decuple the dessert too.
Root Explanation
Decuple is formed from "deci-" (meaning ten) and "-ple" (from Latin "plicare", meaning to fold). The word decuple means to multiply something by ten or to increase it tenfold.
Memory Tip
Think of 'ten' ('deci-') being 'folded' ('-ple') to remember that decuple means to increase something by ten times.
Visually Confused Words
duple
subdecuple
duodecuple
dodecuplet
sescuple
recouple