The most common and most likely answer to this crossword clue is the 6 letter word APEMAN
I've seen this crossword clue in The Guardian
A
P
E
M
A
N
More clues leading to the result APEMAN
- Old primate, a quiet celebrity on the up
- Primate trapped in escape manoeuvre
- Primate’s name secretary recalled
- . Identify communication system to return missing link
- Perhaps Tarzan wants one to be a passing acquaintance of Simple Simon
- A writer enthralling mum, being transformative?
- It’s retrograde to call dad ~the missing link~?
- Simon’s chance encounter I’ll abandon for possible primate once
- Being gone for ages, call father back
- DNA analysis should enable child in suit to back ancestor
Buddy explains!

The straight part
We know that "being transformative" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case being transformative = apeman.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 APEMAN mean?
APEMAN noun- A prehistoric man resembling an ape.