intimate friends and acquaintances
A yojijukugo referring to one's circle of close friends and trusted acquaintances. Somewhat literary and formal.
He was blessed with intimate friends and acquaintances, and lived a fulfilling life.
親友 is a close friend, while 知己朋友 is a broader, more formal term encompassing both close friends and trusted acquaintances.
知人 is a neutral term for an acquaintance, lacking the intimacy implied by 知己朋友.
A yojijukugo composed of 知己 (intimate friend) and 朋友 (friend/companion). The exact historical derivation is uncertain, but it follows the typical pattern of combining synonymous compounds for emphasis.