louden

verbs

become louder
"The room loudened considerably"
louden
antonym
quieten
verb group
cause to become loud
louden
is a type of (narrower)
increase or decrease in intensity
change intensity
cause to become loud
louden
antonym
quieten
verb group
become louder
"The room loudened considerably"
louden
is a type of (narrower)
cause to change; make different; cause a transformation
"The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"
alter, change, modify