One Word Substitution

Inflammable refers to a substance that catches fire easily. Efflorescent relates to losing moisture, callous means insensitive, and impatient means lacking patience.

Genocide is the deliberate and systematic destruction of a racial, political, or cultural group. Regicide is killing a king, homicide is killing a human, and fratricide is killing one's brother.

A centipede is an arthropod with many legs. Mammal, herbivorous, and vertebrate are broader biological classifications that do not specifically describe an insect with many legs.

An aviary is a large cage or building for keeping birds. An attic is a room under a roof, and a nursery is for children or plants.

A misanthropist is someone who dislikes humankind. A philanthropist loves mankind, a mercenary works for money, and a neurotic suffers from anxiety.

Amphibious animals are those that can live both on land and in water. Carnivorous, herbivorous, and graminivorous refer to dietary habits.

Gregarious animals are those that live in flocks or groups. Sociable and social are adjectives describing behavior, but gregarious is the specific term for animals living in herds or flocks.

Brittle describes a material that is hard but liable to break or shatter easily. Breakable is a general term, but brittle is the specific adjective for this property.

Amnesty is an official pardon for people who have been convicted of political offenses. Pardon is a broader term, while amnesty specifically refers to a government act for groups.

An autopsy is a post-mortem examination to discover the cause of death. Epitaph is an inscription on a tombstone, and pyre is a structure for burning a body.

A glutton is a person who eats and drinks excessively. An omnivore is an animal that eats both plants and meat.

A dirge is a mournful song or piece of music, especially one sung at a funeral. A knell is the sound of a bell, especially when rung for a death.

A legend is a traditional story sometimes popularly regarded as historical but unauthenticated, often involving gods or heroes. An epic is a long poem, typically derived from ancient oral tradition.

Loquacious means tending to talk a great deal; talkative. Avaricious means greedy, and impecunious means having little or no money.

A bilingual person is someone who can speak two languages fluently. Bigamy is the act of going through a marriage ceremony while already married to another person.

Insidious refers to something proceeding in a gradual, subtle way, but with harmful effects. Insipid means lacking flavor or interest.

A misogamist is a person who hates marriage. A misogynist is a person who hates women, and a misologist is a person who hates reasoning or argument.

A parasite is an organism that lives on or in a host organism and gets its food from or at the expense of its host. In a human context, it refers to one who depends on others.

Inedible means not fit to be eaten. Inexorable means impossible to stop or prevent.

An iconoclast is a person who attacks cherished beliefs or institutions, historically specifically one who destroys religious images or idols.

Inevitable means certain to happen; unavoidable. Irreparable means impossible to rectify or repair.

Ephemeral means lasting for a very short time. Corporeal relates to the body, not the duration of life.

Anonymous means of unknown authorship. Ambiguous means open to more than one interpretation.

A hypocrite is a person who acts in contradiction to their stated beliefs or feelings. While a liar tells lies, a hypocrite specifically maintains a false appearance of virtue.

Ubiquitous means present, appearing, or found everywhere. The option 'Iquitous' is a typo.