| A | B |
|---|
| Accumulate | to increase in number or amount; to pile up |
| Aggravate | to make worse; to anger or annoy |
| Conserve | to save by using carefully |
| Contaminate | to harm by contact with something undesirable |
| Diminish | to make or become smaller or less; to reduce |
| Drastic | severe; extreme |
| Extravagant | spending more than necessary |
| Frugal | careful in spending or using something |
| Impurity | something that is harmful or dirty |
| Peril | danger |
| Imperil | to place in danger |
| Perpetual | lasting or seeming to last forever or for a long time; continuous |
| Resource | a supply that can be used when there is a need; skill in dealing with difficult situations |
| Substitute | to replace one thing or person for another |
| Sustain | to keep up; to support; to suffer; to undergo |
| Vital | necessary for continued life or prosperity; of the greatest importance |
