9th Grade Vocabulary Words - List 10
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| Word | Definition | Practice Sentence | Synonyms | Antonyms | Part of Speech Description |
|---|---|---|---|---|---|
| nemesis | A formidable rival or adversary who relentlessly opposes and seeks revenge against someone. | My nemesis and I have been rivals since high school, constantly competing against each other. | adversary, enemy, antagonist | ally, friend, supporter | Noun |
| obsessive | Excessive preoccupation or fixation on a particular thought, desire, or idea to the point where it becomes difficult to control. | She became so obsessive about keeping her house perfectly clean that she would spend hours each day scrubbing every surface. | compulsive, fixated, fanatical | indifferent, casual, disinterested | Adjective |
| luminary | An individual who is highly regarded and recognized for their outstanding achievements, exceptional talent, or significant contributions in a particular field or domain. | She was known as a luminary in the field of molecular biology. | notable, illustrious, prominent | obscure, unknown, ordinary | Noun |
| petulant | A person's behavior or mannerisms characterized by frequent annoyance, impatience, or sulking over trivial matters. | The child threw a petulant tantrum when he didn't get his way. | bratty, spoiled, grouchy | composed, patient, calm | Adjective |
| virtuoso | An exceptionally skilled and accomplished performer, often with a deep understanding and mastery of their craft or artistry. | Sherman is a virtuoso on the piano, effortlessly playing any piece with precision and passion. | masterful, skilled, talented | mediocre, amateur, novice | Noun |
| feign | To pretend or fake an action, emotion, or state of being. | She tried to feign interest during the colloquium, but she didn't enjoy the topic. | pretend, act, fake | sincere, genuine | Verb |
| blasphemy | Act or expression that shows disrespect, irreverence, or contempt towards religious beliefs. | In the 1600's, Galileo's heliocentric theory was considered blasphemy. | sacrilege, heresy, irreverence | reverence, devotion, respect | Noun |
| correlate | To establish a connection or relationship between two or more variables or events. | The study found that student achievement tends to correlate with parental involvement in education. | associate, connect, link | conflict, differ, oppose, contradict | Verb |
| litigious | A person or situation prone to engage in or initiate legal actions or lawsuits. | The litigious nature of the case was evident as both parties vehemently argued their positions in court. | argumentative, combative, contentious | amicable, cooperative, conciliatory | Adjective |
| nocturnal | Organisms that are primarily active during the night and are adapted to low-light conditions. | The nocturnal creatures began to hunt at night. | dark, nighttime, evening | diurnal, daytime, light | Adjective |
| mechanism | A process or system that operates or functions in a particular way to achieve a specific outcome. | The mechanism of action of the new diabetes drug is still unclear and requires further investigation. | system, structure, framework | Noun | |
| hamper | To get in the way of progress, development, or functioning of something or someone. | The heavy rain will hamper our ability to hike up the mountain. | obstruct, impede, hinder | aid, facilitate, help | Verb |
| biped | An organism that has two legs and uses them for walking and moving upright on land. | Humans are an example of a biped. | two legged | Noun | |
| meander | To follow a winding or circuitous course. | I love to meander through the park, exploring the various paths and enjoying the peacefulness of nature. | wander, ramble, stroll | rush, hurry, sprint | Verb |
| novelty | Something new, fresh, or innovative that deviates from traditional or standard ideas, approaches, or designs. | The unique ice sculpture was a novelty at the party. | innovation, newness, originality | familiarity, routine, predictability | Noun |
Take a look at other vocabulary lists for Ninth Grade.
Ninth Grade Vocabulary Lists