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

本为古代丧礼中脱下左袖，露出左臂的礼仪。《仪礼．士丧礼》：「主人出，南面，左袒。」后指帮助、偏护某一方。《史记．卷一○．孝文本纪》：「然而太尉以一节入北军，一呼，士皆左袒，为刘氏，叛诸吕，卒以灭之。」清．孔尚任《桃花扇．第三二齣》：「内阁高弘图、姜日广，左袒逆党，俱已罢职了。」

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