unhealthfulness (English)
├── -ness (English)
└── unhealthful (English)
├── healthful (English)
│ ├── -ful (English)
│ └── health (English)
│ └── helthe (Middle English (1100-1500))
│ └── hælþ (Old English (ca. 450-1100))
└── un- (English)
├── on- (Middle English (1100-1500))
│ ├── on- (Old English (ca. 450-1100))
│ └── ond- (Old English (ca. 450-1100))
├── un- (Middle English (1100-1500))
│ └── un- (Old English (ca. 450-1100))
└── unus (Latin)
└── oinos (Latin)
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