@lucialearnsenglish: How to use "Substantiate" | Advanced English Vocabulary 📘 Short English Definition to support a claim with evidence 📘 Meaning in English to provide evidence that proves a statement or theory is valid ✨ Lucia’s English Journey – Let's study together to speak English more clearly and naturally. Subscribe for your daily dose of advanced English! #AdvancedEnglish #EnglishVocabulary #lucialearnsenglish #IELTS #TOEFL