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

• heterosis
• Heterosomata
• heterosporous
• heterospory
• heterostracan
• Heterostraci
• heterotaxy
• Heterotheca
• Heterotheca villosa
• heterothermic
• Heterotrichales
• heterotroph
• heterotrophic
• heterozygosity
• heterozygote
• heterozygous
• heth
• hetman
• Heuchera
• Heuchera americana
• Heuchera cylindrica
• Heuchera sanguinea
• heulandite
• heuristic
• heuristic program