WordNet: disbelief, incredulity, mental rejection, skepticism

doubt about the truth of something

• hypernym doubt, doubtfulness, dubiety, dubiousness, incertitude, uncertainty

disbelief

• (suomi) epäusko (synonyymi)

incredulity

• (englanti) incredulous (derivationally related)
• (suomi) epäusko (synonyymi)

mental rejection

• (suomi) epäusko (synonyymi)

skepticism

• (englanti) skeptical (derivationally related)

• (englanti) skeptical (derivationally related)
• (suomi) epäilys (synonyymi)