What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
That has an inclination to or towards a particular action, habit, quality, etc.; that has a propensity to do something; disposed, inclined. Now rare.
Early 16th century. From classical Latin prōpēnsus weighed down, inclined, sloping, disposed, tending, ready, eager, willing, favourable, use as adjective of past participle of prōpendēre.