An archaic adverbial form meaning in a fierce, harsh, or rapid manner; used historically to describe intense or quick action.
From 'breme' (Old English 'breme') plus the adverbial suffix '-ly' (Old English 'lice'). This adverb form is almost entirely obsolete, appearing only in historical and medieval English texts.
Medieval scribes used 'bremely' to describe the most dramatic moments in sagas—a king 'bremely' striking his enemy suggests not just violence but a reputation-making, legendary kind of ferocity.
Complete word intelligence in one call. Free tier — 50 lookups/day.