'aniline-associated' originates from Modern English, specifically the noun 'aniline' and the past participle 'associated' (from the verb 'associate'), where 'aniline' ultimately derives from Portuguese 'anil' (from Arabic 'an-nīl') meaning 'indigo', and 'associate' comes from Latin 'associāre' meaning 'to unite with'.

'aniline' entered English in the 19th century from French 'aniline' (itself from Neo-Latin 'anilinum'), formed from 'anil' (Portuguese) with chemical suffixes; 'associated' comes from Latin 'associatus' via Old French and Middle English. The compound 'aniline-associated' is a modern, productive English adjective created by combining the noun and the past participle.

Initially 'aniline' referred (via 'anil') to indigo dye sources and later to the specific chemical now called 'aniline'; 'associate' originally meant 'to join' and the compound evolved to mean 'related to or connected with aniline' in modern technical usage.