Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
And you can always venture out to other TLDs.
Source: https://domainnamewire.com/2023/04/13/using-ai-to-find-domains-to-hand-register/
Their domain name *registry* (a.k.a. " Charleston Road Registry Inc" that runs the actual central database for the registration of domains in the various TLDs they "own") is a separate business, and I don't think they're giving that one up.