出典:Wiktionary
From Middle English forbersten, forbresten, from 古期英語 forberstan (“to break, burst asunder, vanish, fail; let go by default”), equivalent to for- + burst.
forburst (third-person singular simple present forbursts, present participle forbursting, simple past forburst or (古風な用法) forbrast, past participle forburst or (古風な用法) forbursten)