INCREDULOUS Synonyms: 144 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/incredulous
WEBSynonyms for INCREDULOUS: skeptical, suspicious, cautious, disbelieving, careful, unbelieving, questioning, doubting; Antonyms of INCREDULOUS: credulous, uncritical, gullible, naive, naïve, unsophisticated, unquestioning, ingenuous.
DA: 10 PA: 82 MOZ Rank: 96