Why is it das Filibuster?

Filibuster ends in -er. Most nouns with this ending are masculine (86% take der), but Filibuster is an exception: das Filibuster.

The other -er exceptions
Sense 1
das

Meaning

[1] Permanent speech in the US Senate to prevent/delay in voting

[1] Dauerrede im US-Senat zur Verhinderung/Verzögerung von Abstimmungen

Examples

[1] "That meant that Roosevelt had a free hand had not even been stopped with a filibuster, the Republicans could stop him"

[1] „Das bedeutete, dass Roosevelt freie Hand hatte; nicht einmal mit einem Filibuster konnten ihn die Republikaner stoppen.“

Declension

1 Singular Plural
Nominativ das Filibuster die Filibuster
Genitiv des Filibuster des Filibusters der Filibuster
Dativ dem Filibuster den Filibustern
Akkusativ das Filibuster die Filibuster

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary