On fedora41 x86_64, wn segfaults when the -synsr (adverb) option is used.
Segmentation fault (core dumped) wn well -synsn -synsv -synsa -synsr
This is using the standard wordnet-3.0-47.fc41.x86_64 from the repos.
I backtracked at koji to older builds, removed wordnet and installed older versions
to find when it broke, it was ok at:
wordnet-3.0-37.fc32.x86_64.rpm
and broke (segfaults) at:
wordnet-3.0-38.fc33.x86_64.rpm
You claim the package that works is from f32 which has been EOL for more than 3 years and is not getting updates at all.
I do understand that this was a search to find out where the break occurred. The only way to have the current package in f41 fixed would be to report a bug on bugzilla.redhat.com and to report your findings there so the info gets to the developers.