Definition of full-mouthed in English:

full-mouthed

adjective

  • 1(of cattle, sheep, etc.) having a full set of adult teeth.

  • 2Spoken loudly or vigorously.

    • ‘We turned pages and crunched onion rings and made moronic full-mouthed sounds of pleasure and amusement.’
    • ‘Her sumptuous piano and languid, full-mouthed singing style is a positive comparison… in a league with Joni Mitchell.’

Pronunciation:

full-mouthed

/ˈfo͝ol ˌmouT͟Hd/