quebracho /kā-bräˈchō/

1. The name of several S American trees yielding very hard wood, incl white quebracho Aspidosperma (family Apocynaceae), and red quebracho Schinopsis (family Anacardiaceae)
2. Their wood or bark

• untrustworthiness
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• untruth
• untruthful
• untruthfully
• untruthfulness
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• untuckered
• untucking
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• untumbled
• untumultuous
• untunable
• untunableness
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• untuned
• untuneful
• untunefully