The Collaborative International Dictionary
Filibusterism
Filibusterism \Fil"i*bus`ter*ism\, n.
The characteristics or practices of a filibuster.
--Bartlett.
Wiktionary
filibusterism
n. 1 (context dated English) piracy, freebooting; the waging of unauthorised war. 2 (context US English) The practice of forcefully and unauthorisedly acquiring control of foreign land. 3 The practice of delaying legislation by filibuster or other obstructive tactics.