Tumultuous [tʃuːˈmʌl.tʃu.əs] means very loud, or full of confusion, change, or uncertainty (Cambridge Dictionary) Example: She grew up in a very politically active family at a tumultuous time in Britain.

Within the same vein as conniving, we've got duplicitous [duˈplɪs.ɪ.təs] - deceptive and fraudulent (Merriam Webster) As an example, here's a gem of a quote by Ianthe Tridentarius: "If God hears that yet another one of his duplicitous sluts betrayed him, he’s never going to come back from it”. (Nona the Ninth by Tamsyn Muir)

A conniving [kəˈnaɪvɪŋ] person deceives others for their own advantage (Cambridge Dictionary)

Chalice [ˈtʃælis] In Christian ceremonies, a large, decorative gold or silver cup from which wine is drunk.

Loquacious means “liking to talk and talking smoothly and easily.” Someone described as loquacious might also be called wordy (prone to using more words than necessary) or garrulous (tending to talk a lot). (Merriam Webster) Example: In fact, she falls into a small group of patients whom we all see and who are extraordinarily loquacious: they go on, and on and on.

egregious [ɪˈɡriː.dʒəs] - extremely bad in a way that is very noticeable (Cambridge Dictionary) Example: Mistakes happen, but some are far more egregious than others.

Salient [ˈseɪliənt] means prominent, of notable significance. (Merriam Webster) Example: "The report outlined the most salient impacts of climate change."

Saccharine [ˈsæk.ər.iːn] means too pleasant or charming, with too much feeling to be believed. Too sweet and sugary (Cambridge Dictionary) The movie's saccharine ending is a disappointment. Fun fact: The word comes from Latin "saccharum" - "sugar", and the word sugar in my native language has the same roots and sounds very similar - сахар (sakhar)