What does "neuroticism" mean?

The quality or state of being neurotic

Neuroticism

Common synonyms include: anxiety, battle fatigue, combat fatigue, dimension, emotional instability, factor.

noun

noun ·Rare ·Advanced level

Noun

1
The quality or state of being neurotic countable, uncountable
"Your neuroticism is getting out of hand."
2
a mental or personality disturbance not attributable to any known neurological or organic dysfunction wordnet

"Your neuroticism is getting out of hand."

From neurotic + -ism.