Unfavourably
Wiktionary, Creative Commons Attribution/Share-Alike License
adverb.
In an
unfavourable
manner.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adverb.
showing disapproval; in a disparaging way
Word Usage
"He would not have to look back and compare his last term unfavourably with the glories of yester year."
suggests
unfavorably