swithe

(adverb)

adverb

1. Alternative form of swith

2. instantly, quickly, speedily, rapidly, strongly; very

- That thou doest, do thou swithe. — Wyclif, (John xiii. 27)And he yede and opened the tomb, and there flew out an adder right hideous to see; the which as swithe flew about the city and the country, and soon after the city sank down. — The Travels of Sir John Mandeville