The antonyms of the word "more dissimulating" would be truthful, honest, sincere, straightforward, candid, genuine, frank, authentic, open, and transparent. Dissimulating refers to hiding one's true feelings, intentions or identity, and the antonyms point to the opposite characteristic of being open and honest. When someone speaks truthfully, they don't hide their thoughts or intentions behind a facade of deception or duplicity. Candidness is an essential quality, especially in personal or professional relationships, where trust and transparency are critical factors. Being straightforward and honest is not only ethical but also promotes mutual understanding and clarity in communication, making it easier to build trust and stronger relationships.