One Word Substitution

Vindictive means having or showing a strong or unreasoning desire for revenge. Vindicator is one who defends, not necessarily revengeful.

A sinecure is an office or position that requires little or no work but provides a salary. Honorary positions are usually unpaid.

Altruism is the practice of disinterested and selfless concern for the well-being of others. Philanthropy is similar but often refers specifically to charitable acts.

To swat is to hit or slap something with a flat object. Hew and chop refer to cutting, and gnaw refers to biting.

A pantheist is a person who believes that God is everything and everything is God (the universe and God are identical).

Somnambulism is the medical term for sleepwalking. Somniloquism refers to sleep talking, while narcolepsy is a sleep disorder characterized by excessive daytime sleepiness.

A conservative is someone who prefers to maintain the status quo and is generally opposed to radical or sudden changes. Revolutionary and evolutionary imply change, while static simply means not moving.

Uxoricide is the act of killing one’s wife.

A monomaniac is a person who tends to fixate obsessively over one thing.

Bellicose - having or showing a ready disposition to fight

 Boutique - It is a dress shop that sells female clothes and jewellery.

An apiary - It means a collection of beehives.

Manuscript - A manuscript is a written information that has been manually created by one or more people, such as a hand-written letter. 

Agnostic - It means a person who is not sure about God’s existence. 

This is the correct option. Eccentric is a person of unconventional and slightly strange behaviour. E.g: He noted her eccentric appearance and decided against marrying her.