Home / HSK Vocabulary / HSK 6 / 孤独 孤独 gū dú HSK 6 · C1+ Meanings lonely solitary Quick facts Traditional孤獨 HSK LevelHSK 6 CEFRC1+ ← Back to HSK 6 word list Practice 孤独 with flashcards MandoBridge uses spaced repetition to help you remember HSK 6 vocabulary — free on iOS and Android.