The most common and most likely answer to this crossword clue is the 10 letter word EFFORTLESS
I've seen this crossword clue in The Guardian
E
F
F
O
R
T
L
E
S
S
More clues leading to the result EFFORTLESS
Buddy explains!

The straight part
We know that "easy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case easy = effortless.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 EFFORTLESS mean?
EFFORTLESS adjective- Without effort.