disbelieve
verb /ˌdɪsbɪˈliːv/
  /ˌdɪsbɪˈliːv/
not used in the progressive tenses (formal)Verb Forms
 Phrasal Verbs| present simple I / you / we / they disbelieve |    /ˌdɪsbɪˈliːv/   /ˌdɪsbɪˈliːv/  | 
| he / she / it disbelieves |    /ˌdɪsbɪˈliːvz/   /ˌdɪsbɪˈliːvz/  | 
| past simple disbelieved |    /ˌdɪsbɪˈliːvd/   /ˌdɪsbɪˈliːvd/  | 
| past participle disbelieved |    /ˌdɪsbɪˈliːvd/   /ˌdɪsbɪˈliːvd/  | 
| past simple disbelieving |    /ˌdɪsbɪˈliːvɪŋ/   /ˌdɪsbɪˈliːvɪŋ/  | 
| past participle disbelieving |    /ˌdɪsbɪˈliːvɪŋ/   /ˌdɪsbɪˈliːvɪŋ/  | 
- disbelieve something to not believe that something is true or that somebody is telling the truth
- Why should I disbelieve her story?
 - He had come to disbelieve his own assertions.
 - We have no reason to disbelieve the information.