| hardship(noun, worry, strain, anxiety, burden) |
| hassle(noun, worry, strain, anxiety, burden) |
| heebie-jeebies(noun, anxiety, agitation, nervousness, excitability) |
| high pitch(noun, expression, force, power, passion) |
| impatience(noun, worry, strain, anxiety, burden) |
| insomnia |
| intenseness(noun, force, power, passion, strength) |
| jumps(noun, anxiety, agitation, nervousness, uneasiness) |
| keenness(noun, force, power, passion, strength) |
| magnitude(noun, force, power, passion, strength) |
| might(noun, force, power, passion, strength) |
| misgiving(noun, worry, strain, anxiety, burden) |
| mistrust(noun, worry, strain, anxiety, burden) |
| moodiness(noun, anxiety, agitation, nervousness, uneasiness) |
| nerves(noun, worry, excitement, anxiety, agitation) |
| neurasthenia(noun, worry, strain, anxiety, agitation) |
| neuroticism(noun, anxiety, agitation, nervousness, uneasiness) |
| oppression(noun, worry, strain, anxiety, burden) |
| overextension(noun, worry, strain, anxiety, burden) |
| pain |