| dues(noun, damage, balance, capital, credit) |
| eagle(noun, bird) |
| egret(noun, bird) |
| emu(noun, bird) |
| engagement(noun, charge, concern, authority, importance) |
| excess baggage(noun, expression, trouble, concern, strain) |
| exigency(noun, trouble, force, strain, difficulty) |
| expectancy(noun, worry, strain, anxiety, burden) |
| extension(noun, worry, strain, anxiety, burden) |
| falcon(noun, bird) |
| fault(noun, charge, concern, authority, importance) |
| fear(noun, worry, strain, anxiety, burden) |
| fearfulness(noun, worry, strain, anxiety, burden) |
| ferment(noun, worry, strain, anxiety, burden) |
| finch(noun, bird) |
| flamingo(noun, bird) |
| flutter(noun, worry, strain, anxiety, burden) |
| foot dragging(noun, expression, difficulty, obstacle, obstruction) |
| force(noun, trouble, worry, strain, difficulty) |
| glitch(noun, difficulty, obstacle, obstruction, impediment) |