Search Result for "unnecessarily": 
Wordnet 3.0

ADVERB (2)

1. in an unnecessary manner;
- Example: "they were unnecessarily rude"

2. without any necessity;
- Example: "this marathon would exhaust him unnecessarily"


The Collaborative International Dictionary of English v.0.48:

Unnecessary \Un*nec"es*sa*ry\, a. Not necessary; not required under the circumstances; unless; needless; as, unnecessary labor, care, or rigor. -- Un*nec"es*sa*ri*ly, adv. -- Un*nec"es*sa*ri*ness, n. [1913 Webster] [1913 Webster]
WordNet (r) 3.0 (2006):

unnecessarily adv 1: in an unnecessary manner; "they were unnecessarily rude" [ant: necessarily, needfully] 2: without any necessity; "this marathon would exhaust him unnecessarily"