Definition of "radically" in English

adverb

1. In a radical manner; fundamentally; very.

   • two radically different political groups

2. At the root.

   • "Clot" and "clod" are radically the same word.
   • This [Algonquian] language [family] is spoken by all the Indians throughout New England. Every tribe, as that of Stockbridge, that of Farmington, that of New London, &c. has a different dialect [i.e. language], but the language [family] is radically the same.