[cb321]

Since identifier bike shedding is more broad than only top-level domain names, readers interested in a tool like this might also be interested in https://github.com/c-blake/thes - a command-line thesaurus utility written in Nim and organized around the Moby Thesaurus format. An example usage might be:

    $ thes -n5 lofty
    airy    gaudy   high   showy  brand  sound
    big     grand   lurid  steep  clear  valid
    erect   grave   noble  tall   lucid  logo
    fancy   great   proud  tony   regal

Observant readers might notice 3 banks of alphabetic sorting for the 3 kinds of synonyms - reciprocal/reflected (airy..tony), defined but irreciprocal (brand..valid), and wilder made-up names/phrases someone got into Moby (just logo in this example). These can be configured to show up in 3 distinct terminal colors.

Besides the prefix/suffix ideas of `tldx` in TFA, "synonymity" could also be incorporated, but you might need a higher quality source of such than Moby which has kind of a "big tent" aspect to its synonym lists.