The phrase "place trust in" refers to having confidence in someone or something. However, there are several antonyms for this phrase that suggest a lack of trust or faith. These words include doubt, distrust, suspicion, disbelief, uncertainty, and skepticism. Doubt suggests a lack of certainty or conviction in someone or something. Distrust implies a fundamental lack of trust or faith in someone, while suspicion suggests a sense of mistrust or skepticism about someone's true motives or intentions. Meanwhile, disbelief implies a refusal to believe something, while uncertainty suggests a lack of confidence in the accuracy or truthfulness of a statement. Finally, skepticism implies a thoughtful and questioning attitude towards a particular claim or statement.