tiān​yī​wú​fèng

flawless

天衣无缝 (天衣無縫) tiān​yī​wú​fèng
flawless idiom
perfect and natural; without any traces of human effort, gaps, or flaws

His lies were so seamless that everyone believed them.

seamless idiom
literally referring to the legendary robes worn by heavenly beings that are made without seams

Legend has it that the robes of celestial maidens have no seams—truly 'seamless'.

Frequency

Movie subtitles
2.38 per million appears in 1% of films
Written text
0.972 per million

Sources

Definitions
CC-CEDICT