严丝合缝 yán sī hé fèng

DEFINITIONS

  1. to fit tightly (idiom)
  2. to join seamlessly
  3. to fit snugly

CHARACTERS

严 yán
HSK 4
strict, rigorous, rigid; stern
丝 sī
HSK 5
silk; fine thread; wire; strings
合 hé
HSK 4
combine, unite, join; gather
缝 fèng
HSK 6
sew, mend