Resembling or characteristic of a buccaneer; piratical, adventurous, or unscrupulous in manner.
From 'buccaneer' + the adjective suffix '-ish', creating a descriptive term for buccaneer-like behavior or qualities.
The suffix '-ish' is brilliant for creating shades of meaning—'buccaneerish' doesn't mean you ARE a pirate, just that you act like one, perhaps in a playful or exaggerated way.
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