What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
Definition of agonious in US English:
agonious
adjective
(A) Full of agony, agonizing. (b) Involving struggle; relating to the agony of death.
Origin
Early 16th century; earliest use found in Robert Fabyan (d. 1513), chronicler. From agony + -ous, originally after Middle French agonieux agonizing.
