左袒

zuǒtǎn
  1. to take sides with
  2. to be partial to
  3. to be biased
  4. to favor one side

CEDICT

  1. (literary) to side with (someone); to take sides; to discriminate in favor of; to show prejudice (to a particular party)
  2. to side with (someone); to take sides; to discriminate in favor of; to show prejudice (to a particular party)

Wiktionary

本為古代喪禮中脫下左袖，露出左臂的禮儀。《儀禮．士喪禮》：「主人出，南面，左袒。」後指幫助、偏護某一方。《史記．卷一○．孝文本紀》：「然而太尉以一節入北軍，一呼，士皆左袒，為劉氏，叛諸呂，卒以滅之。」清．孔尚任《桃花扇．第三二齣》：「內閣高弘圖、姜日廣，左袒逆黨，俱已罷職了。」

重編國語辭典

Entry Composition

1 左 zuǒ
  1. left
  2. the Left (politics)
  3. east
  4. unorthodox
  5. queer
  6. wrong
  7. differing
  8. opposite
  9. variant of 佐 zuǒ
=2 袒 tǎn to bare
=2 袒 tǎn old variant of 袒 tǎn

Related entries

右袒 yòutǎn
  1. to take sides with
  2. to be partial to
  3. to be biased
  4. to favor one side
左右袒 zuǒyòutǎn
  1. to take sides with
  2. to be partial to
  3. to be biased
  4. to favor one side