The most common and most likely answer to this crossword clue is the 14 letter word SENNAÂ FOREHAND
S
E
N
N
A
Â
F
O
R
E
H
A
N
D
Buddy explains!
The straight part
We know that "not easy to get on top of it" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case not easy to get on top of it = senna forehand.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.