An archaic or dialectal verb meaning to boil or ferment with intense heat or passion.
From Latin 'fervere' (to boil, to be hot), which is also the root of modern English words like 'fervent' and 'fervor'. The abbreviated form 'ferv' is rarely used in modern English.
This ancient word survives in our modern 'fervent' and 'fervor,' showing how Latin verbs about boiling literally gave us metaphors for passion—our strongest emotions have always been described as if they're bubbling over like hot water!
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