indoles
Natural disposition; innate character; unalterable intrinsic traits and qualities (collectively).
uncountable
He must be treated as the Brachmans did their children, whose indoles they disliked.
Where it comes from
From Latin indolēs (“inborn quality, nature”), from indu- (“within, in”) + -olēs (“growing”).
Adapted from the Wiktionary entry indoles (CC BY-SA 4.0).