Dictionary / Vocabulary / 親近感
しんきんかん
affinity; feeling of closeness (with someone); feeling of kinship
common word
いやいや、結構結構。下の名前で呼び合うのは親近感がわいてよろしいことだ。
Not at all, that's perfectly fine. Calling each other by one's given name is a good thing; it produces a feeling of fellowship.