1. In an unnecessary manner
   "they were unnecessarily rude" 
2. Without any necessity
   "this marathon would exhaust him unnecessarily"

See also: unnecessary

Antonym: necessarily

• neap tide
• Neapolitan
• Neapolitan ice cream
• near
• near beer
• Near East
• near gale
• near miss
• near thing
• near vision
• near-blind
• near-death experience
• nearby
• Nearctic
• nearer
• nearest
• nearly
• nearness
• nearside
• nearsighted
• nearsightedness
• neat
• neat's-foot oil
• neaten
• neath