front 1 effortless | back 1 (ADJ) requiring little/no effort |
front 2 navigate | back 2 (V) to find one's way over long distance |
front 3 trace | back 3 (V) find/discover by investigation |
front 4 comparison | back 4 (N) the act of comparing |
front 5 achievement | back 5 (N) a thing done successfully with hard work |
front 6 current | back 6 (N) a body of water/air that flows in one direction |
front 7 shoreline | back 7 (N) the line along which a large body of water meets the land |
front 8 experiment | back 8 (V) to try out new ideas/ methods |
front 9 immense | back 9 (ADJ) extremely large in scale or degree |
front 10 span | back 10 (V) to stretch or reach over |
front 11 mastery | back 11 (N) the full grasp of a subject or skill |
front 12 unwavering | back 12 (ADJ) steady; not moving back and forth |
front 13 curiosity | back 13 (N) a strong desire to learn or know something |
front 14 migration | back 14 (N) a regular, predictable movement of living things from one location to another |
front 15 onboard | back 15 (PREP) on or within ( a ship, aircraft, other vehicle) |
front 16 eventually | back 16 (ADV) in the end, after a long delay |
front 17 destructive | back 17 (ADJ) causing great damage |
front 18 inhabit | back 18 (V) to occupy or live in |