louden
loud·en
verb \ˈlau̇-dən\loud·enedloud·en·ing \ˈlau̇d-niŋ, ˈlau̇-dən-iŋ\
Definition of LOUDEN
intransitive verb
: to become loud
transitive verb
: to make loud
First Known Use of LOUDEN
circa 1848
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