What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
with object To beget; to give birth to; (in extended use) to originate, give rise to. Also occasionally without object: to reproduce.
Early 17th century; earliest use found in Randle Cotgrave (fl. 1587–?1630), lexicographer. From classical Latin prōgenerāt-, past participial stem of prōgenerāre to beget, give birth to from prō- + generāre. Compare French † progenier to engender.