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

See also: unnecessary

Antonym: necessarily

• refractory period
• refractory pot
• refractory-lined
• refracture
• refrain
• reframe
• refrangible
• refresh
• refreshed
• refreshen
• refresher
• refresher course
• refreshful
• refreshfully
• refreshing
• refreshingly
• refreshment
• refried beans
• refrigerant
• refrigerate
• refrigerated
• refrigerating
• refrigeration
• refrigeration system
• refrigerator