filibuster-proof

The word is a modern political compound. The first element, "filibuster," has a colorful history, evolving from a term for a pirate or plunderer to its specific parliamentary sense of an obstructive delaying tactic. The second element, "proof," originates from the Latin probare (to test, prove), entering English with the sense of being able to withstand a test. When combined, the literal construction "filibuster-resistant" creates a metaphorical shield, describing legislative measures, rules, or majorities engineered to be impervious to the specific political tactic of obstruction by prolonged speech. The logic is directly analogous to words like "waterproof" or "bulletproof," applying the concept of designed immunity to a procedural challenge.

Structure: filibuster + proof - filibuster: From Dutch vrijbuiter (freebooter, pirate), via Spanish filibustero. In this compound, it functions as the noun base specifying the threat or action to be resisted. - proof: From Old English prōfian ("to test, prove"), via Old French preuve. In this compound, it functions as an adjective-forming suffix meaning "resistant to, impervious to".