Intermediate (B1)
IPA: /prəˈlɔːŋɡər/
KK: /prəˈlɔŋɡər/
Definition
A person or thing that makes something last longer or extends its duration.
Example
The prolonger of the meeting was necessary to discuss all the important topics.
Conversation

Have you heard about the new gadget they say is a real prolonger of battery life?

Yeah, I've seen some reviews about it; people seem pretty impressed!

I wonder if it really makes that much of a difference in usage time.

It might be worth trying out, especially if it can prolong my phone's life during long trips.
Synonyms & Antonyms
Synonyms
extender
lengthener
protractor
Antonyms
shortener
diminisher
reducer
Root Explanation
Prolonger → It is formed from "pro-" (meaning forward or in favor of) and "longus" (meaning long). The word "prolonger" means to make something longer or extend it forward in time or space.
Memory Tip
Think of extending something 'forward' ('pro-') to make it 'longer' — that's why prolonger means to make something longer.
Visually Confused Words
pronger
proflogger
proponer
unprolonged
spermologer
phrenologer
longer