What does "shyness" mean?

The quality of being shy; a fear of social interactions.

What is a synonym for "shyness"?

Common synonyms include: afraidness, avoidance, bashfulness, bashfulness, boggle, boggling.

/ˈʃaɪnəs/ noun

noun ·Uncommon ·Advanced level

Noun

1
The quality of being shy; a fear of social interactions. uncountable, usually
"Her shyness kept her from asking him to the prom."
2
a feeling of fear of embarrassment wordnet

"Off hand, I'd say her problem is shyness."

From shy + -ness.