失踪

失蹤
shīzōng
  1. to be missing
  2. to disappear
  3. unaccounted for

CEDICT

Entry Composition

1 失 shī
  1. to lose
  2. to miss
  3. to fail
=2 踪 zōng variant of 踪 zōng
=2 踪 zōng (bound form) footprint; trace; tracks