淫いん奔ぽんいんぽんMeanings1na-adjective, nounlewdness; lasciviousnessRare literary term for lewd or lascivious behavior; not used in everyday conversation.その小しょう説せつには淫いん奔ぽんな描びょう写しゃが多おおく含ふくまれている。That novel contains many lewd descriptions.