Answer:

ruder

AnswerCrossword Clue
RUDERShowing less refinement
RUDERMore disrespectful
RUDERLess mannerly
RUDERNot so delicate
RUDERNot so civil
RUDERLess refined
RUDERLess polite
RUDERLess civil
RUDERMore boorish
RUDERMore of a boor