wildcat
US /ˈwaɪldˌkæt/
UK /ˈwaɪldˌkæt/

1.
a fierce, untamed cat, especially a European wildcat (Felis silvestris) or a North American bobcat (Lynx rufus).
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The European wildcat is a solitary and elusive animal.
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We spotted a wildcat near the forest edge.
2.
3.
a speculative venture, especially in oil drilling, with little chance of success.
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Drilling for oil in that remote area was a complete wildcat.
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Many investors lost money on wildcat oil wells.
1.
operating or done in a reckless or speculative way.
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The company engaged in wildcat drilling in unproven territories.
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They took a wildcat approach to their investments.
1.
to engage in a wildcat strike.
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The workers decided to wildcat in protest of the new policies.
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The union warned against any attempts to wildcat.