Here are tropes regarding trust and the act of trusting.

See also LoyaltyTropes, TheSecretIndex (being trusted with keeping a personal or professional secret), TruthAndLies, and BetrayalTropes (for when trust is broken).
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!!Tropes:
[[index]]
* ZeroPercentApprovalRating: An authority figure is opposed by their subordinates and everyone else.
* BetrayalInsurance: Just in case someone tries to betray them, a character has a surefire punishment in store.
* TheCassandra: She's completely trustworthy and everyone should believe her when she predicts incoming doom, but no one does.
* TheConfidant: A reliable friend the main character can confide in.
* TheConsigliere: A trusted right-hand advisor.
* ADoormatToHisMen: The leader is ''too'' trusting of his men, thus undermining his own authority.
* DoYouTrustMe: An earnest question asked from one character to another.
* DoesntTrustThoseGuys: Someone has one or more bad experiences with someone in a group, so naturally, ''no one'' in that group can be ''trusted.''
* ExcellentJudgeOfCharacter: Someone is actually good and usually correct in guessing who to trust or not.
* FaithInTheFoe: A person trusts an enemy's character.
* TheFarmerAndTheViper: You gave someone a chance, and it came back to bite you in the ass.
* HatedByAll: A character is so bad that ''no one'' likes them. ''No one.''
* HorribleJudgeOfCharacter: Placing trust in the [[ObviouslyEvil obviously untrustworthy.]]
* IgnoredExpert: A scientist who is right but not trusted by those in power.
* KillMeNowOrForeverStayYourHand: Placing your life in your enemy's hands in the faith that they are not evil enough to kill you.
* NamesToTrustImmediately: A character's name alone tells you they're a good person.
* NeverTrustAHairTonic: Hair tonic is either completely useless or ''way too'' useful.
* NeverTrustATitle: When the title has literally nothing to do with the work.
* NeverTrustATrailer: "Hey, wait! The trailer ''lied to us''!"
* NudityEqualsHonesty: Someone wants to prove that they have no weapons. Or...anything, for that matter.
* TheOnlyOneITrust: Even with so many other people around, there is only one person a character can trust.
* PowerOfTrust: Simply being told that they're trusted gives someone the strength to get the job done.
* ThePromise: A very important promise is made. Maybe it's kept. Maybe it's broken. Maybe it causes a whole lot of trouble.
* TheReliableOne: The one guy or girl in the group that can be depended on for anything.
* RememberThatYouTrustMe: Someone is in such a bad place that their friends or family actually has to remind them that they can be trusted.
* TotallyTrustingLoveInterest: The LoveInterest who believes in their partner’s fidelity no matter what, and is justified in believing so.
* TrustBuildingBlunder: There's an exercise to build trust, like "fall and I'll catch you." It is failed.
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* TrustMeImAnX: Your profession indicates you can be trusted, because it implies that you have special wisdom to impart or you can be useful.
* TrustPassword: You use a code, like a phrase of some kind, to verify that you are who you claim to be.
* UntrustingCommunity: A whole town full of people who don't like you.
* YouLoseAtZeroTrust: Your relationship in a video game is so important that if you neglect it, you will be punished!
[[/index]]