from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The quality of being unfirm.
from the GNU version of the Collaborative International Dictionary of English
- n. Infirmness.
from The Century Dictionary and Cyclopedia
- n. The state of being unfirm; want of firmness; instability.
unfirm + -ness (Wiktionary)
Rather than making him bouncy, the graduated shift to Terran weight gave a sense of unfirmness.