tactlessness
🇺🇸
/ˈtæktləsnəs/
🇬🇧
/ˈtæktləsnəs/
noun
R
a lack of skill in dealing with people in a way that does not upset them
His tactlessness at the party offended several guests.
彼のパーティーでの不作法は、数人のゲストを不快にさせた。
translation
無神経