大敌

大敵
dàdí

formidable enemy; archenemy

Wiktionary

Entry Composition

=1 大 dà
  1. big; large; great
  2. older (than another person)
  3. eldest (as in 大姐 dàjiě)
  4. greatly; freely; fully
  5. (dialect) father
  6. (dialect) uncle (father's brother)
=1 大 dài see 大夫 dàifu
2 敌 dí
  1. (bound form) enemy
  2. (bound form) to be a match for; to rival
  3. (bound form) to resist; to withstand

Containing this entry

大敌当前 dàdídāngqián (idiom) to be faced with a formidable enemy
如临大敌 rúlíndàdí
  1. lit. as if meeting a great enemy (idiom)
  2. fig. cautious
  3. with great preoccupation
  4. with strict precaution