| Term | Definition |
| Accumulate | v. To increase in number or amount; to pile up, collect, or gather. |
| Aggravate | v. 1. To make worse. 2. To anger or annoy. n. 1. Annoyance; exasperation. 2. A source of annoyance or exasperation |
| Conserve | v. To save by using carefully. n. The saving or protection of something through careful use. |
| Contaminate | v. To harm by contact with something undesirable. n. The act of or result of contaminating. |
| Diminish | v. To make or become smaller or less; to reduce. |
| Drastic | adj. Severe; extreme |
| Extravagant | adj. Spending, costing, or using more than is required. n. 1. The quality of being wasteful or spending more than is necessary. 2. A thing that costs more than one can afford. |
| Frugal | adj. Careful in spending or using something |
| Impurity | n. Something that is harmful or dirty. |
| Peril | n. Danger; something that is dangerous. v. To place in danger. adj. Dangerous |
| Perpetual | adj. Lasting or seeming to last forever or for a long time; continous. |
| Resource | n. 1. A supply that can be used when there is a need. 2. Skill in dealing with difficult situations. adj. Able to deal with difficult problems. |
| Substitute | v. To replace one thing or person for another. n. Something or someone that replaces another. adj. Acting in place of someone or something else. |
| Sustain | v. 1. To keep up; to support. 2. To suffer; to undergo |
| Vital | adj. 1. Neccessary for continued life or prosperity. 2. Full of lively spirit. 3. Of the greatest importance. |