Polite (5)
'polite' is the definition.
(synonyms)
This is all the clue.
(Other definitions for civil that I've seen before include "Polite and non-military" , "Courteous, polite" , "Courteously polite" , "Nonviolent refusal to obey laws" , "Not rude" .)
'polite' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for courteous that I've seen before include "Respectful in manner" , "like civil service?" , "Polite, considerate" , "Mannerly" .)
'polite' is the definition.
(I know that polite can be written as genteel)
This is the entire clue.
(Other definitions for genteel that I've seen before include "Terribly polite" , "Politely refined" , "Affectedly refined and upper-crust" , "Marked by refinement in taste and manners" , "Artificially polite" .)
'polite' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for urbane that I've seen before include "Cultured" , "Suave and sophisticated" , "Suave, refined, courteous" , "Smooth" , "Smooth-mannered" .)
'polite' is the definition.
(I've seen this before)
This is all the clue.
(Another definition for wellmannered that I've seen is " Polite".)