凶多吉少

xiōngduōjíshǎo
  1. lit. everything bodes ill, no positive signs (idiom)
  2. fig. inauspicious; everything points to disaster

CEDICT

to be more ominous than propitious; fraught with grim possibilities

Wiktionary

形容事情的形勢不樂觀。西遊記．第四十回：「今日且把這慈悲心略收起收起，待過了此山，再發慈悲罷，這去處凶多吉少。」醒世恆言．卷五．大樹坡義虎送親：「安南離此有萬里之遙，音信尚且難通，況他已是官身，此去刀劍無情，凶多吉少。」也作「多凶少吉」。

重編國語辭典

Entry Composition

=1 凶 xiōng
  1. terrible
  2. fearful
=1 凶 xiōng
  1. vicious
  2. fierce
  3. ominous
  4. inauspicious
  5. famine
  6. variant of 兇 xiōng
2 多 duō
  1. many; much; more; a lot of
  2. too many; in excess
  3. (after a numeral) ... odd
  4. how (to what extent) (Taiwan pr. duó)
  5. (bound form) multi-; poly-
3 吉 jí
  1. lucky
  2. giga- (meaning billion or 10^9)
4 少 shǎo
  1. few
  2. less
  3. to lack
  4. to be missing
  5. to stop (doing sth)
  6. seldom