1. Planned in advance
   "with malice aforethought"
   - planned, plotted

See also: premeditated

• Omiya
• ommastrephes
• ommatidium
• Ommiad
• omni-
• omnibus
• omnidirectional
• omnidirectional antenna
• omnidirectional radio range
• omnidirectional range
• omnifarious
• omnipotence
• omnipotent
• omnipresence
• omnipresent
• omnirange
• omniscience
• omniscient
• omnium-gatherum
• omnivore
• omnivorous
• Omomyid
• Omomyid group
• omophagia
• Omotic