若有若无

若有若無
ruòyǒuruòwú
  1. indistinct
  2. faintly discernible

CEDICT

好像有又好像没有，模煳不清的样子。

重編國語辭典

Entry Composition

1 若 ruò
  1. to seem
  2. like
  3. as
  4. if
2 有 yǒu
  1. to have; there is
  2. (bound form) having; with; -ful; -ed; -al (as in 有意 yǒuyì intentional)
3 若 ruò
  1. to seem
  2. like
  3. as
  4. if
4 无 wú
  1. not to have
  2. no
  3. none
  4. not
  5. to lack
  6. un-
  7. -less

Related entries

僾 ài
  1. indistinct
  2. hazy
  3. misty
  4. to seem
  5. to appear
模糊不清 móhubùqīng
  1. indistinct
  2. fuzzy
  3. blurred with age
這一個段落是模糊不清的。

This paragraph is vague.

Source: Tatoeba

漫漶 mànhuàn (of writing etc) indistinct (due to water damage or wear)
讷讷 nènè
  1. (of speech) indistinct
  2. mumbling
  3. hesitating
含糊不清 hánhúbùqīng
  1. unclear
  2. indistinct
  3. ambiguous
幽幽 yōuyōu
  1. faint
  2. indistinct
隐隐 yǐnyǐn
  1. faint
  2. indistinct
糊里糊涂 húlihútú
  1. confused
  2. vague
  3. indistinct
  4. muddle-headed
  5. mixed up
  6. in a daze
茫 máng
  1. vast, with no clear boundary
  2. fig. hazy
  3. indistinct
  4. unclear
  5. confused
糊糊 húhu
  1. viscous
  2. gooey
  3. sticky
  4. indistinct
  5. thick congee
  6. porridge
黑糊糊 hēihūhū
  1. black
  2. dark
  3. dusky
  4. indistinct