We have put together a list of words that are similar to FILIBUSTER.

5 Alternative Words Similar to filibuster

1 Delay Noun      Synonym Words Like Delay
2 Delayer Noun      Synonym Words Like Delayer
3 Holdup Noun      Synonym Words Like Holdup
4 Block Verb      Synonym Words Like Block
5 Blockade Verb      Synonym Words Like Blockade

10 definitions of filibuster

1 A freebooter: in history, a name distinctively applied to the West Indian bucaneers or pirates of the seventeenth century. See bucaneer.
2 Hence One of a band of men organized, in disregard of international law, for the purpose of invading and revolutionizing a foreign state.
3 In a legislative or other deliberative body, a member in the minority who resorts to irregular or obstructive tactics to prevent the adoption of a measure or procedure which is favored by the majority. Also filibusterer.
4 To act as a freebooter or bucaneer.
5 To obstruct legislation by undue use of the technicalities of parliamentary law or privileges, as when the minority in a legislative assembly, in order to prevent the passage of some measure obnoxious to them, endeavor to consume time or tire out their opponents by useless motions, speeches, objections, etc.
6 A freebooter, or mercenary soldier.
7 A delaying tactic, especially the use of long, often irrelevant speeches given in order to delay progress or the making of a decision, especially on the floor of the US Senate.
8 A member of a legislative body causing such obstruction.
9 To take part in a private military action in a foreign country.
10 To use obstructionist tactics in a legislative body.
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide