From Old Swedish buldra. Arguably from Proto-Germanic *bellaną (“to roar”), from Proto-Indo-European *bʰel-. Arguably onomatopoeic. Possibly related to Dutch bulderen, German poltern, German bollern.
bullra (present bullrar, preterite bullrade, supine bullrat, imperative bullra)
active | passive | |||
---|---|---|---|---|
infinitive | bullra | — | ||
supine | bullrat | — | ||
imperative | bullra | — | ||
imper. plural1 | bullren | — | ||
present | past | present | past | |
indicative | bullrar | bullrade | — | — |
ind. plural1 | bullra | bullrade | — | — |
subjunctive2 | bullre | bullrade | — | — |
present participle | bullrande | |||
past participle | — |
1 Archaic. 2 Dated. See the appendix on Swedish verbs.