This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. of, pertaining to, or similar to pirates

adj. Of or pertaining to a pirate; acquired by, or practicing, piracy.

Of or pertaining to a pirate or piracy; of the nature of piracy: as, piratical acts.

Engaged in piracy, or robbery on the high seas: as, a piratical ship or commander.

Pertaining to or practising literary piracy: as, piratical publishers.

adj. characteristic of pirates

adj. characteristic of piracy

"Numbers found their way thither through the pathless wastes of Russia; others navigated the Mediterranean in their sea-serpents, as they termed their piratical vessels."

predatory    lawless    warlike    ill-fated    adventurous