著三不著兩

着三不着两
zháosānbùzháoliǎng
  1. scatter-brained
  2. thoughtless

CEDICT

行事或說話思慮不周，輕重失宜。

重編國語辭典

Entry Composition

1 著 zháo
  1. to touch
  2. to come in contact with
  3. to feel
  4. to be affected by
  5. to catch fire
  6. to burn
  7. (coll.) to fall asleep
  8. (after a verb) hitting the mark
  9. succeeding in
2 三不 sānbù the three no's (abbreviated catchphrase)
3 著 zháo
  1. to touch
  2. to come in contact with
  3. to feel
  4. to be affected by
  5. to catch fire
  6. to burn
  7. (coll.) to fall asleep
  8. (after a verb) hitting the mark
  9. succeeding in
4 兩 liǎng
  1. two
  2. both
  3. some
  4. a few
  5. tael, unit of weight equal to 50 grams (modern) or 1⁄16 of a catty 斤 jīn (old)

Related entries

不注意 bùzhùyì
  1. thoughtless
  2. not pay attention to
女人们不注意他。

The ladies don't notice him.

Source: Tatoeba

不周 bùzhōu
  1. not satisfactory
  2. thoughtless
  3. inconsiderate
沒心沒肺 méixīnméifèi
  1. simple-minded
  2. thoughtless
  3. heartless
  4. nitwitted
粗心 cūxīn
  1. careless
  2. thoughtless
她为自己的粗心感到羞耻。

She was ashamed of herself for her carelessness.

Source: Tatoeba

混 hùn
  1. to mix
  2. to mingle
  3. muddled
  4. to drift along
  5. to muddle along
  6. to pass for
  7. to get along with sb
  8. thoughtless
  9. reckless
油和水不能混在一起。

Oil does not mix with water.

Source: Tatoeba