-nyms: acro-, backro-, meta- etc.

28iii25: Thanks to living together, somehow, which invoked

OPDFNC
(ordinary person's de facto nonchoice) I realized that a separate location for this corner of onomastics was necessary. And of course the web resources for -nyms are legion:

-onym Wikipedia

Metonymy Wikipedia

List Of 47 Words That End In -Nym Dictionary.com

Words That End with NYM Merriam-Webster

-nym Wiktionary

Stories of Words: Nym Word Groups (pdf)

Name Words That End In -Nym Dictionary.com