difficult (English)
└── difficulty (English)
└── difficultee (Middle English (1100-1500))
└── difficulté (Old French (842-ca. 1400))
└── difficultas (Latin)
├── -tas (Latin)
├── difficilis (Latin)
│ ├── dis- (Latin)
│ └── facilis (Latin)
│ ├── -ilis (Latin)
│ ├── facere (Latin)
│ ├── facio (Latin)
│ └── facio (Portuguese)
└── difficul (Latin)
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