This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Lacking strength or energy; spiritless; weak.

adj. Lacking courage; spineless or cowardly.

adj. Calm and controlled in trying circumstances; cool.

adj. Lacking nerve: fearful; cowardly.

adj. Lacking a nervous system.

adj. Devoid of nerves: calm, controlled, cool under pressure.

adj. Destitute of nerves.

adj. Destitute of strength or of courage; wanting vigor; weak; powerless.

Without nerve; destitute of strength; weak.

adj. lacking strength

adj. marked by calm self-control (especially in trying circumstances); unemotional

"Again he sat down and shuffled the bunch of matches on his knees, got it into place on his palm, with the wrist of his other hand forced the nerveless fingers down against the bunch, and with the wrist kept them there."

powerless    composed   

nervelessness   

weak    powerless    apathetic   

flaccid    boneless    spiritless    limp    unresisting    white-knuckled    listless    lifeless    powerless    unmoving