| Term | Definition |
| ameliorate | become better; make better; improve; enhance |
| amelioration | improvement |
| conserve | keep from waste, loss, or decay; save |
| conservation | preservation from loss, injury, or waste |
| conservationist | one who advocates the conservation of natural resources |
| detriment | a damage or loss |
| detrimental | (sometimes followed by 'to') causing harm or injury |
| exotic | strikingly strange or unusual |
| folly | foolish or senseless behavior |
| formerly | at a previous time |
| former | preceding; previous |
| harmony | peaceable or friendly relations; accord; agreement; tranquility; concord |
| harmonious | friendly; amicable |
| ignore | refuse to take notice of; disregard |
| ignoramus | ignorant, stupid person; dunce; dolt; dullard; nincompoop |
| impediment | any structure that makes progress difficult |
| impede | block passage through |
| indolent | disinclined to work or exertion |
| indolence | idleness; laziness |
| intact | undamaged in any way |
| invalid | someone who is incapacitated by a chronic illness or injury |
| noncarcinogenic | not producing, or tending to produce, cancer |
| parsimonious | unduly sparing in the spending of money; stingy; miserly; tightfisted |
| parsimony | extreme stinginess |
| raze | tear down so as to make flat with the ground |
| reticent | reluctant to draw attention to yourself |
| reticence | restraint in communicating |
| retire | withdraw from active participation |
| retort | answer; reply sharply or angrily |
| subvert | overturn or overthrow from the foundation; undermine |
| subversion | sabotage; undermining |
| tractable | Easily led or controlled. |
| tractability | obedience |