| A | B |
| to increase in number or amount; to pile up, collect, or gather | accumulate |
| to make worse | agravate |
| to anger or annoy | agravate |
| to save by using carefully | conserve |
| to harm by contact with something undesirable | contaminate |
| to make or become smaller or less; to reduce | diminish |
| sevre; extreme | drastic |
| spending, costing, or using more than is required | extravagant |
| a thing that cost more than one can afford | extravagance |
| careful in spending or using something | frugal |
| something that is harmful or dirty | peril |
| danger; something that is dangerous | perilous |
| dangerous | perilous |
| lasting or seeming to last forever or for a long time; continuous | perpetual |
| a supply that can be used when there is a need | resource |
| to replace one thing or person for another | substitute |
| something or someone that replaces another | substitute |
| acting in place of someone | substitute |
| to keep up; to suport | sustain |
| to suffer; to undergo | sustain |
| necessary for continued life or prosperity | vital |
| full of lively spirit | vital |
| of the greatest importance | vital |