Madoc's synonyms are limited due to the fact that it is a proper noun, and as such, it refers to a specific individual. However, there are potential synonyms that could be associated with Madoc depending on the context of its usage. For example, one might use words like explorer, adventurer, or even pioneer if referencing Madoc's historical reputation as a Welsh prince who is said to have sailed to North America in the 12th century. Alternatively, if Madoc is used in reference to a particular book, film, or other cultural artifact, one might use terms like inspired by, based on, or adapted from as synonyms.