The most common and most likely answer to this crossword clue is the 8 letter word FEMININE
F
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M
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N
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The straight part
We know that "like a girl" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like a girl = feminine.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 FEMININE mean?
FEMININE noun- That which is feminine.
- (possibly obsolete) A woman.
- (grammar) The feminine gender.
- (grammar) A word of the feminine gender.
- Of or pertaining to the female gender; womanly.
- Of or pertaining to the female sex; biologically female, not male.
- Belonging to females; typically used by females.
- Having the qualities stereotypically associated with women: nurturing, not aggressive.
- (grammar) Of, pertaining or belonging to the female grammatical gender, in languages that have gender distinctions.