1. Irresponsible in the use of firearms 
2. Marked by extreme intensity of emotions or convictions; inclined to react violently; fervid
   - fierce, tearing, vehement, violent

See also: intense, irresponsible

• auroscope
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• auspiciousness
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• austenitic manganese steel
• austenitic steel
• austere
• austerely
• austereness
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• Austerlitz