莫講

莫讲
mòjiǎng
  1. let alone
  2. not to speak of (all the others)

CEDICT

to say nothing of; let alone

Wiktionary

Entry Composition

1 莫 mò
  1. do not
  2. there is none who
2 講 jiǎng
  1. to speak
  2. to explain
  3. to negotiate
  4. to emphasize
  5. to be particular about
  6. as far as sth is concerned
  7. speech
  8. lecture

Related entries

何況 hékuàng
  1. let alone
  2. to say nothing of
  3. besides
  4. what's more
遑論 huánglùn
  1. let alone
  2. not to mention
波士頓對我來說已經太冷了,更遑論是芝加哥。

Boston is too cold for me, let alone Chicago.

Source: Tatoeba