Artha is a free cross-platform English thesaurus that works completely off-line and is based on WordNet. For more info, http://artha.sourceforge.net/wiki/index.php/Home
I'm not providing a package since --if it will run under your Puppy-- it is likely available to you via Puppy Package Manager*. [Remember to update PPM and configure for access to your Puppy's binary compatible distro's repos. I wondered why it showed up on pkgs.org but not PPM ].
Only about a 6500 Kb download, Wordnet included. Once opened a launcher will appear on taskbar for easy access.
* Both 64 & 32 bit packages are available from links on the referenced website. But they do not include wordnet or other dependencies. And it's likely that Puppys not based on debian or Ubuntu would require even more as Artha was only created for those.
Edit: However, I just booted into VoidPup64. I had created a pet under Fossapup64. It ran OOTB under VoidPup64. Unfortunately, even at 6500 Kb, it's too large to provide as an attachment. So I posted this query, viewtopic.php?p=58098#p58098
Edit2: after satisfying my propensity for taking the long way, I'm back. You can download an artha pet from here, https://www.mediafire.com/file/n5swcfrr ... 3.pet/file. As mentioned above, it works under VoidPup64. Anyone want to test it under a Slacko-current?