| enthusiasm(noun, force, quality, character, strength) |
| essence(noun, force, quality, character, strength) |
| fire(noun, force, quality, character, strength) |
| force(noun, quality, character, strength, spirit) |
| frame of mind(noun, expression, idiom, force, quality) |
| gumption |
| gut(noun, quality, slang, fear) |
| hardihood(noun, power, strength, spirit, dash) |
| humor(noun, force, quality, character, strength) |
| impudence(noun, firmness, liveliness, bravery, flippancy) |
| jazz(noun, force, quality, character, strength) |
| life(noun, force, quality, character, strength) |
| life force(noun, expression, force, quality, character) |
| lion-heartedness(noun, spirit, dash, courage, nerve) |
| liveliness(noun, force, quality, character, strength) |
| manhood |
| manliness |
| mood(noun, force, quality, character, strength) |
| moral fiber(noun, expression, idiom, character, strength) |
| morale(noun, force, quality, character, strength) |