不足為外人道

不足为外人道
bùzúwèiwàiréndào
  1. (idiom) no need to tell others; let's keep this between ourselves
  2. also pr. bùzúwéiwàiréndào

CEDICT

not fit to be told to others; no need to tell others; this is not to be mentioned to outsiders; this is strictly between ourselves

Wiktionary

不值得向外面的人說。

重編國語辭典

Entry Composition

1 不足 bùzú
  1. insufficient
  2. lacking
  3. deficiency
  4. not enough
  5. inadequate
  6. not worth
  7. cannot
  8. should not
2 為 wèi
  1. because of
  2. for
  3. to
3 外人 wàirén
  1. outsider
  2. foreigner
  3. stranger
4 道 dào
  1. (bound form) way; reason; principle
  2. (bound form) a skill; an art; a specialization
  3. (Daoism) the Way; the Dao
  4. to say (introducing a direct quotation, as in a novel)
  5. (bound form) to express; to extend (polite words)
  6. classifier for long thin things (rivers, cracks, shadows etc), barriers (walls, doors etc), questions (in an exam etc), commands, courses in a meal, steps in a process
  7. (old) circuit (administrative division)

classifiers: 條, 股