new kid on the block
US /nuː kɪd ɑn ðə blɑk/
UK /nuː kɪd ɑn ðə blɑk/
1.
a person who is new to a place or organization and has little experience
:
•
As the new kid on the block, she was eager to learn everything.
•
The company hired a lot of new kids on the block this year.