As verbs the difference between quieten and tranquillize
is that quieten is to make quiet while tranquillize is .
quieten
English
Verb
(
en verb)
To make quiet.
To become quiet.
Usage notes
The use of "quieten" is not very common; the use of "quiet" as a verb is more often found.
tranquillize
English
Verb
(tranquilliz)
Related terms
* tranquillity
* tranquillizer