Synonyms

Slender means thin or delicate, which is synonymous with dainty. The other options are unrelated.

A smudge is a blurred or smeared mark, which is synonymous with spread. The other options are unrelated.

Suave means charming, confident, and elegant, which is synonymous with polite in a social context. The other options are unrelated.

Sloppy (spelled 'Sloopy' in the prompt) means messy or careless, which is synonymous with disheveled. The other options are unrelated.

Carnage refers to the killing of a large number of people, which is synonymous with slaughter. The other options are unrelated.

A ravine is a deep, narrow gorge, which is synonymous with an abyss. The other options are unrelated.

It means to talk foolishly or too much... i.e jabber.  

To cleave means to split or sever something, making sever the correct synonym. The other options are unrelated.

To sack someone is to dismiss them from their job, making dismiss the correct synonym. The other options are unrelated.

Pacify means to quell the anger or excitement of someone. While 'intercede' is not a perfect synonym, it is the only option that relates to mediation or calming a situation compared to the other choices.

Amatory relates to or is induced by sexual love. It is derived from the Latin word for love.

Academic refers to things related to education, schools, or universities. A teacher is a person who works in an academic setting, making it the best synonym among the choices.

Animism is the belief that objects, places, and creatures all possess a distinct spiritual essence or soul (spirits and demons).

To actuate means to cause a machine or device to operate or to motivate someone to act. 'Start' is the closest synonym provided.

Acerbity refers to sharpness and directness in speech or manner, often characterized by bitterness or sourness.