Definition of hoarsen in US English:

hoarsen

verb

  • (with reference to a person's voice) make or become rough and harsh-sounding.

    with object ‘a voice strangled and hoarsened by fear’
    no object ‘when voicebox cartilage is inflamed, the voice hoarsens’

Pronunciation

hoarsen

/ˈhɔrsən//ˈhôrsən/