不良 (bù liáng) means “bad; harmful; unhealthy”. It is an HSK 5 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
吸烟是一种不良习惯。
Xīyān shì yī zhǒng bùliáng xíguàn.
Smoking is a bad habit.
Updated: 2026-07-18