Chagrin refers to a feeling of frustration or annoyance caused by failure or disappointment.

// I decided to take a gap year to the chagrin of my parents.

Antithetical typically describes something that is in direct and unambiguous opposition to another thing. It is often used with to.

// The district's new policy is fundamentally antithetical to the school's values.

a person who is extremely neat about their surroundings or appearance

Junket refers to a trip that is paid for by someone else, such as a promotional trip made at another's expense, or an official's trip made at public expense.

// The cast of the widely-acclaimed movie is making press junkets to major cities.

Impervious describes that which does not allow something (such as water or light) to enter or pass through. It is also used formally to mean “not bothered or affected by something.” Both senses of impervious are usually used with to.

// The material is impervious to water.

// The mayor seems impervious to criticism.

Something described as apotropaic is designed or intended to avert evil.

// The etchings are believed to be associated with ancient apotropaic rituals.

Uncanny is typically used to describe something that is strange or unusual in a way that is surprising or difficult to understand. It can also describe something that seems to have a supernatural character or origin.

// The child has an uncanny ability to recognize streets and locations she's seen only once or twice before.

// The lights suddenly flickered, and we were both overcome with an eerie, uncanny feeling.