| A | B |
| expand | increase in size; enlarge; swell |
| alter | make different; change; vary |
| mature | ripe; fully grown or developed |
| sacred | worthy of respect; holy |
| revise | change; bring up to date |
| pledge | promise |
| casual | happening by chance; not planned or expected |
| pursue | follow; proceed along |
| unanimous | in complete agreement |
| fortunate | having good luck; lucky |
| pioneer | one who goes first or prepares a way for others |
| innovative | fresh; clever; having new ideas |
| slender | long and thin; limited; slight |
| surpass | do better than; be greater than; excel |
| vast | very great; enormous |
| doubt | not believe; not be sure of; feel uncertain about |
| capacity | amount of room or space inside; largest amount that can be held by a container |
| penetrate | get into or through |
| pierce | go into; go through |
| accurate | exactly right as the result of care or pains |
| microscope | instrument with a lens for making objects larger so that one can see things more clearly |
| grateful | feeling gratitude; thankful |
| cautious | very careful; never taking chances |
| confident | firmly believing; certain; sure |