Meaning of “shy” - Learner’s Dictionary

shy

adjective uk us /ʃaɪ/ (shyer, shyest)

B1 not confident, especially about meeting or talking to new people:

He was too shy to say anything to her.
shyly adverb

She smiled shyly.
shyness noun [ U ]

(Definition of “shy adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)