Penultimate means "occurring immediately before the last one," or in other words, "next to last." A formal adjective, it is always used before the noun it modifies.

// The penultimate episode of the TV series features some shocking plot twists that set up what will surely be a thrilling series finale.

the beginning of evening; twilight; dusk

Duress, which is typically used with under, refers to force or threats meant to make someone do something. It is used especially of unlawful coercion.

// The defense asserts that the defendant’s confession was made under duress.

Finicky describes someone who is very hard to please, or something that requires a lot of care, precision, or attentive effort.

// Although she was a finicky eater as a child, she grew up to become a world-renowned chef famous for her encyclopedic knowledge of global ingredients.

// The latest game in the series boasts amazing graphics but the controls are a little finicky.

To embarrass someone is to make them feel confused and foolish in front of other people.

// Unexpected laughter embarrassed the speaker.

Sonorous is an adjective used in formal speech and writing to describe something that has a deep, loud, and pleasant sound. Sonorous can also mean “producing sound (when struck)” and “imposing or impressive in effect or style.”

// The baritone’s deep, sonorous voice cut through the din of the crowd, the voices immediately halting their conversations to listen more intently.

Repertoire typically refers to a list or supply of plays, songs, dances, etc. that a company or person is prepared to perform,. Repertoire may also refer to a supply of skills or devices, or more broadly to an amount or supply.

// The band's repertoire includes both classic and modern jazz.

// The couple enrolled in a cooking class to expand their culinary repertoire.

// His fashion repertoire includes a rotation of vibrant floral tops.

bad handwriting; poor penmanship

To atone for something is to make amends for it—that is, to do something good as a way of showing that you are sorry about, or have remorse for, a mistake, bad behavior, etc.

// The novel opens with an act of cruelty and then traces the thoughts and actions of those responsible as they try to atone for it.

Impetuous is a synonym of impulsive that describes a person who is acting without thought, or an action that is done without thought.

// That impetuous decision could've cost us everything we worked so hard for.