Source : Webster's Revised Unabridged Dictionary (1913)

Solely \Sole"ly\, adv.
   Singly; alone; only; without another; as, to rest a cause
   solely one argument; to rely solelyn one's own strength.

Source : WordNet®

solely
     adv : without any others being included or involved; "was entirely
           to blame"; "a school devoted entirely to the needs of
           problem children"; "he works for Mr. Smith
           exclusively"; "did it solely for money"; "the burden of
           proof rests on the prosecution alone"; "a privilege
           granted only to him" [syn: {entirely}, {exclusively}, {alone},
            {only}]