Obstructively
The Century Dictionary and Cyclopedia
In an obstructive manner; by way of obstruction.
Wiktionary, Creative Commons Attribution/Share-Alike License
adverb.
In an
obstructive
manner.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adverb.
in an obstructive manner
Word Usage
"One hopes that they'll use their presence constructively, not obstructively."
verb-stem
obstruct