Atramentum - Wikipedia Atramentous is a related adjective which means "black as ink" Historically, to atrament something would mean to write something down with ink The word atrament is related to modern English atrocious: both originate from Latin atrare, which presumably meant to make something black
atramentous - Definition, Meaning Synonyms - Vocab Dictionary The term ‘atramentous’ describes something that is dark or black in appearance, similar to that of ink It can refer to color in various contexts, such as art, nature, or descriptions of objects