Explanation: “Implacable” means unable to be calmed or appeased.

Explanation: “Capitulate” means to cease resistance or to yield.

Explanation: Also means something intended to provoke conflict.

Explanation: “Obsequious” means overly eager to please or obey.

Explanation: “Ephemeral” means lasting for a very short time.

Explanation: “Insidious” means proceeding in a gradual, subtle way but with harmful effects.

Explanation: “Vociferous” refers to someone loud and forceful.

Explanation: “Belligerent” means hostile or aggressive.

Explanation: “Ubiquitous” means present, appearing, or found everywhere.

Explanation: “Acrimonious” refers to a speech or debate that is angry and bitter.

Explanation: “Erudite” means having or showing great knowledge.

Explanation: “Tenacious” means very determined or persistent.

Explanation: “Vindicate” means to clear someone of blame or suspicion.

Explanation: “Mendacious” means not telling the truth; lying.

Explanation: “Bellwether” refers to a person or thing that assumes the leadership or forefront.

Explanation: “Obfuscate” means to confuse or make unclear.

Explanation: “Aplomb” means self-confidence or assurance, especially in a demanding situation.

Explanation: “Egregious” means outstandingly bad or shocking.

Explanation: “Enervate” means to weaken or drain energy from.

Explanation: “Fortuitous” means happening by chance, often in a beneficial way.

Explanation: “Lucid” means expressed clearly or easy to understand.

Explanation: “Obsolete” means outdated or no longer in use.

Explanation: “Vocational” refers to training or skills related to a specific occupation.