We found one dictionary that defines the word augmented fourths:

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1. augmented fourths: Wiktionary

▸ Words similar to augmented fourths ▸ Usage examples for augmented fourths ▸ Idioms related to augmented fourths ▸ Wikipedia articles (New!) ▸ Words that often appear near augmented fourths ▸ Rhymes of augmented fourths ▸ Invented words related to augmented fourths