The Collaborative International Dictionary of English v.0.48:
Unsymmetrically \Un`sym*met"ric*al*ly\, adv. Not symmetrically. [1913 Webster]WordNet (r) 3.0 (2006):
unsymmetrically adv 1: in an asymmetrical manner; "they were asymmetrically arranged" [syn: asymmetrically, unsymmetrically] [ant: symmetrically]