The most common and most likely answer to this crossword clue is the 10 letter word FORGIVABLE
I've seen this crossword clue in The Guardian
F
O
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G
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V
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More clues leading to the result FORGIVABLE
Buddy explains!

The straight part
We know that "easily excused" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case easily excused = forgivable.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 FORGIVABLE mean?
FORGIVABLE adjective- Able to be forgiven; excusable.
- Of a loan, or a portion of it: such that repayment may be deferred for a period if the lender meets certain obligations.