Home / HSK Vocabulary / HSK 5 / 唯一 唯一 wéi yī HSK 5 · C1 Meanings only; sole Quick facts HSK LevelHSK 5 CEFRC1 ← Back to HSK 5 word list Practice 唯一 with flashcards MandoBridge uses spaced repetition to help you remember HSK 5 vocabulary — free on iOS and Android.