Cryptic crossword clue
Hastened to adopt disguise for auditors 4

The most common and most likely answer to this crossword clue is the 4 letter word HIED

I've seen this crossword clue in The Guardian
H
I
E
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The straight part
We know that "Hastened" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hastened = hied.
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 HIED mean?

HIED verb
  1. To hasten; to go quickly, to hurry.
  2. To hurry (oneself).

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