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| 10th Grade: 10th Grade Word List: Language Arts (Difficult Words 1) | 
| contagion   | |
| n. the communication of an attitude or emotional state among a number of people; any disease easily transmitted by contact | |
| deleterious   | |
| a. having harmful effect; injurious; having quality of destroying life; noxious; poisonous | |
| edify   | |
| v. instruct or correct, especially so as to encourage intellectual, moral, or spiritual improvement | |
| indignant   | |
| a. affected with indignation; wrathful; passionate; irate; feeling wrath by unworthy or unjust treatment | |
| inexhaustible   | |
| a. incapable of being exhausted, emptied, or used up; unfailing; not to be wasted or spent | |
| insolent   | |
| a. strange; unusual; haughty or brutal in behavior or language; grossly rude or disrespectful | |
| introversion   | |
| n. the folding in of an outer layer so as to form a pocket in the surface; the condition of being folded inward or sheathed | |
| legislative   | |
| a. relating to a legislature or composed of members of a legislature; of or relating to or created by legislation | |
| magnanimous   | |
| a. very generous or forgiving, especially toward someone less powerful than oneself; chivalrous | |
| mundane   | |
| a. belonging to this earth or world; not ideal or heavenly; concerned with commonplaces; ordinary | |
| obstinacy   | |
| n. the quality or state of being difficult to remedy, relieve, or subdue; resolute adherence to own ideas or desires | |
| paradox   | |
| n. something apparently contradictory in nature; statement that looks false but is actually correct | |
| paucity   | |
| n. scarcity; smallness of number; the presence of something only in small or insufficient amounts | |
| pedantic   | |
| a. marked by narrow focus on or display of learning, especially formal rules and trivial points | |
| perennial   | |
| n. lasting indefinitely long time; suggesting self-renewal; remaining active throughout all the time | |
| sanctimonious   | |
| a. excessively or hypocritically pious; possessing sanctity; sacred; holy; saintly; religious | |
| sloth   | |
| n. laziness; apathy and inactivity in the practice of virtue; any of several slow-moving arboreal mammals | |