foolishly (English)
├── -ly (English)
│ ├── -lice (Old English (ca. 450-1100))
│ └── -ly (Middle English (1100-1500))
└── foolish (English)
├── -ish (English)
│ └── -ish (Middle English (1100-1500))
└── fool (English)
└── fol (Middle English (1100-1500))
└── fol (Old French (842-ca. 1400))
└── follis (Latin)
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