The most common and most likely answer to this crossword clue is the 10 letter word INJUNCTION
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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.
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Crossword Answer definitions
INJUNCTION noun- The act of enjoining; the act of directing, commanding, or prohibiting.
- That which is enjoined; such as an order, mandate, decree, command, precept
- A writ or process, granted by a court of equity, and, in some cases, under statutes, by a court of law, whereby a party is required to do or to refrain from doing certain acts, according to the exigency of the writ.