一日不见，如隔三秋

一日不見，如隔三秋
yīrìbùjiàn,rúgésānqiū
one day apart seems like three years (idiom)

CEDICT

Entry Composition

1 一日 yīrì
  1. (literary or dialectal) one day
  2. (literary) another day in the future
  3. (literary) yesterday
  4. another day in the future
  5. one day
  6. yesterday
2 不见 bùjiàn
  1. not to see
  2. not to meet
  3. to have disappeared
  4. to be missing
3 如 rú
  1. as
  2. as if
  3. such as
4 隔 gé
  1. to separate
  2. to partition
  3. to stand or lie between
  4. at a distance from
  5. after or at an interval of
5 三 sān
  1. three
  2. 3
=6 秋 qiū
  1. autumn
  2. fall
  3. harvest time
=6 秋 qiū old variant of 秋 qiū
=6 秋 qiū used in 秋千 qiūqiān