mistrustful vs trustful

mistrustful

adj
  • Having a suspicion, imagining or supposing (that something undesirable is the case). 

  • Expressing or showing a lack of trust. 

  • Having mistrust, lacking trust (in someone or something). 

trustful

adj
  • Trusting; willing to trust. 

How often have the words mistrustful and trustful occurred in a corpus of books? (source: Google Ngram Viewer )