| impetuousness |
| incautiousness(noun, drive, press, rush, dash) |
| indecision(anxiety, confusion, doubt, uncertainty, whodunit) |
| indecisiveness(anxiety, confusion, doubt, uncertainty, whodunit) |
| indignation(noun, passion, temper, anger, rage) |
| infuriation(noun, passion, temper, anger, rage) |
| insecurity(anxiety, confusion, doubt, uncertainty, whodunit) |
| intensity(noun, worry, passion, excitement, strain) |
| irascibleness(passion, fit, temper, irritability) |
| irresolution(anxiety, confusion, doubt, uncertainty, whodunit) |
| irritableness(noun, irritation, annoyance, inability, pique) |
| jitters(noun, worry, anxiety, anger, agitation) |
| jumps(noun, worry, anxiety, anger, agitation) |
| keen desire |
| lather |
| life |
| liveliness |
| low boiling point(expression, idiom, passion, fit, temper) |
| mad(noun, passion, temper, anger, rage) |
| misgiving(noun, worry, strain, anxiety, burden) |