One Word Substitution

A memento is an object kept as a reminder or souvenir of a person or event.

An inaugural speech is one given at the beginning of a term or ceremony to mark its commencement.

An emigrant is a person who leaves their own country in order to settle permanently in another. An immigrant is a person who comes to live permanently in a foreign country.

Correct answer is "highbrow". 

A colleague is a person with whom one works in a profession or business.

"Contemporary" meaning living or happening in the same period of time is the correct answer. 

A fleet is a group of ships sailing together, engaged in the same activity, or under the same ownership.

Credulous describes a person who is too ready to believe things, often without sufficient evidence.

A calligraphist (or calligrapher) is a person who practices calligraphy, which is the art of beautiful handwriting.

A novice is defined as a person who is new to or inexperienced in a field or situation. Apprentice is also similar, but novice is the more general term for someone just starting to learn.

A malcontent is a person who is chronically dissatisfied and rebellious. Heresy refers to beliefs contrary to orthodox doctrine, while felon and surrogate have unrelated meanings.

A laundry is a place or room where clothes and linens are washed. Mortuary is for the dead, while a wardrobe is for storing clothes.

Inalienable refers to rights or possessions that cannot be taken away or transferred. Edible means fit to be eaten, and legible means clear enough to read.

An introvert is a person who is predominantly concerned with their own thoughts and feelings rather than with external things. Extrovert is the opposite, and eccentric refers to unconventional behavior.

An altruist is a person who helps others without expecting any personal gain or benefit. The word comes from the French 'autrui' meaning 'other people'. A misogynist hates women, a misogynamist hates marriage, and a miser is greedy.