Definition of wildcatter
1
: one that drills wells in the hope of finding oil in territory not known to be an oil field
2
: one that promotes unsafe and unreliable enterprises
especially
: one that sells stocks in such enterprises
3
: one that designs, builds, or fires wildcat cartridges and firearms
4
: a worker who goes out on a wildcat strike
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Merriam-Webster unabridged
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Time Traveler for wildcatter
The first known use of wildcatter was in 1883
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