What's the adjective for civilest? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs civilize and civilise which may be used as adjectives within certain contexts.
civilized
Having a highly developed society or culture.
Showing evidence of moral and intellectual advancement; humane, reasonable, ethical.
“The inequallity that now is, has been introduced by the Lawes civill.”
“During the time of the civill warres, he lived in lundy island.”
“In addition to reproducing anecdotes and quips from jest books and wit books, he makes particular use of George Whetstone's Heptameron of civill discourses.”