The team played with youthful exuberance, full of energy and enthusiasm.
childlike innocence
Frequency:
60
%
The painting captured the childlike innocence of the young girl.
childish behavior
Frequency:
50
%
His childish behavior was starting to annoy his friends.
innocent charm
Frequency:
45
%
His innocent charm won over the hearts of many.
Idiomatic Expressions for juvenility
Phrase: young at heart
Meaning: to have a youthful outlook on life, regardless of age
Usage: Even though she is in her 60s, she is still young at heart and loves to try new things.