indigo noun adjective Stress: first syllable 🤍 Save Syllables: in-di-go (3) English Definition A deep reddish-blue color, or a plant used to make blue dye. Example Sentence The night sky was a deep shade of indigo. US IPA /ˈɪndɪɡoʊ/ 🔊 Listen US UK IPA /ˈɪndɪɡəʊ/ 🔊 Listen UK Synonyms deep blue navy violet Share this Word Facebook WhatsApp X Telegram Copy Link