noun, na-adjective
incivility; impoliteness
Archaic term for rudeness or lack of proper greeting; rarely used in modern Japanese, where 無礼 or 失礼 are more common.
古い文書では「不挨拶」を無礼の意味で使うことがある。
In old documents, 不挨拶 is sometimes used to mean rudeness.
Compound of 不 (negative prefix) and 挨拶 (greeting), literally 'without greeting'. The exact historical derivation is uncertain, but it follows a common pattern of forming abstract nouns with 不.