The phrase "earth manner" refers to behaving or acting in a down-to-earth, humble, and natural way, without any pretensions or arrogance. Full definition
Your down to earth manner left me in no doubt as to the direction my case was running. (thompsons.law)
I would like to express my sincere thanks and gratitude for the professional, yet down - to - earth manner in which you recently represented me. (attorneydavidgabriel.com)
When we met British couple Barry and Lynette who run the sailing school their warm, down to earth manner put us at ease straight away, and we felt better once we were aboard our home for the week: Kay Sira, a Slipper 42 ft Ketch. (neverendingvoyage.com)