Antonyms of verb disbelieve

1 sense of disbelieve

Sense 1
disbelieve, discredit -- (reject as false; refuse to accept)
       Antonym of believe (Sense 1)
      => believe -- (accept as true; take to be true; "I believed his report"; "We didn't believe his stories from the War"; "She believes in spirits")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb disbelieve

1 sense of disbelieve

Sense 1
disbelieve, discredit -- (reject as false; refuse to accept)
       => reject -- (refuse to accept or acknowledge; "I reject the idea of starting a war"; "The journal rejected the student's paper")

Antonyms of adj disbelieving

1 sense of disbelieving

Sense 1
disbelieving, skeptical, sceptical, unbelieving -- (denying or questioning the tenets of especially a religion; "a skeptical approach to the nature of miracles")

INDIRECT (VIA incredulous) -> credulous -- (disposed to believe on little evidence; "the gimmick would convince none but the most credulous")

Similarity of adj disbelieving

1 sense of disbelieving

Sense 1
disbelieving, skeptical, sceptical, unbelieving -- (denying or questioning the tenets of especially a religion; "a skeptical approach to the nature of miracles")
       => incredulous (vs. credulous) -- (not disposed or willing to believe; unbelieving)