What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
1Of the nature of or relating to a reply. Now rare.
2Biology= "replicative".
Mid 17th century; earliest use found in Joseph Hall (1574–1656), bishop of Norwich, religious writer, and satirist. Originally from post-classical Latin replicatorius concerned with replication from classical Latin replicāt-, past participial stem of replicāre + -ōrius.