The most common and most likely answer to this crossword clue is the 7 letter word NEONATE
I've seen this crossword clue in The Guardian
N
E
O
N
A
T
E
More clues leading to the result NEONATE
- Scoffed after New Age’s recent arrival
- Newborn child? No, a teen, strangely
- Gas worried infant
- Gas worried a very young person
- One neat, newly delivered young infant
- Newborn given gas at end of procedure
- Baby alone on a teat’s content
- Young infant, exceptionally neat one
- Finally, Amazon Echo working with bit one’s recently delivered
- Recent arrival working to be accepted by a teen that’s spoilt
Buddy explains!

The straight part
We know that "Baby" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case baby = neonate.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does NEONATE mean?
NEONATE noun- A newborn infant; recently born baby.