When you send your people a reminder, they need to ACCEPT or DECLINE.
Perhaps you don't like those words.
Maybe you like them...but in another language.
You can edit keywords to say what you want in the language you prefer.
START FROM YOUR KEYWORDS PAGE
Click on Settings (gear icon, bottom left-hand corner).
Choose Keywords (turquoise box in image below).
The Keywords page will open.
Click the 3-dot Action Menu of the keyword you wish to edit. It will change to Edit. Click on it.
The edit box will open. Type in the word / words / translation you wish to use. Click Update to confirm your action.
Look at the updated keywords below. Note that you can even use a language with non-English letters.
SOME MORE RULES ABOUT THE WAY KEYWORDS WORK
(1) All spaces will be ignored: beginning, middle or end.
So, if your keyword is RSVPNOW, these will all work (be valid):
RSVP NOW
RSVPNOW
R S V P N O W
(2) All items which are non-alphanumeric (not letters or numbers) will be ignored. So, the following three examples reduce to RSVPNOW: