Late Middle English; earliest use found in Rolls of Parliament. From classical Latin quiētus est, lit. ‘he is quiet’, in post-classical Latin also (of a debtor) ‘he is discharged’ from quiētus + est is.
Definition of quietus est in US English:
quietus est
noun
historical
Quietus.
Origin
Late Middle English; earliest use found in Rolls of Parliament. From classical Latin quiētus est, lit. ‘he is quiet’, in post-classical Latin also (of a debtor) ‘he is discharged’ from quiētus + est is.