Antonyms for the word "more pretenseless" include words such as "affected," "phony," "pretended," "artificial," and "insincere." These words connotate a lack of authenticity or genuineness, which directly opposes the meaning of the word "pretenseless." Similar to that word, antonyms for "more pretenseless" can also include words like "sincere," "authentic," "genuine," and "honest." These words connote a sense of truthfulness and integrity, which are attributes associated with a person who is "pretenseless." Understanding the antonyms for any word can help deepen one's appreciation of its meaning and nuances.