atspring (third-person singular simple present atsprings, present participle atspringing, simple past atsprang, past participle atsprung)
From Middle English atspringen, ætspringen, from Old English ætspringan (“to rush forth, spurt out, spring out”), equivalent to at- + spring. Compare Dutch ontspringen (“to spring, well, outflow”), German entspringen (“to spring from, escape, arise”).