后退to step back

使退却to push back

• 却敌

  repulse the enemy

拒绝to reject

表示转折but

• 我虽忙，却不累。

  I'm busy, but not tired.

• 他人虽老了，心却不老。

  Although he's old, he's still young at heart.

• 我到处找他，他却在这里。

  I was searching for him everywhere, but he was here all along.

• 昨天我们等他，他却不来。

  We waited for him yesterday but he didn't arrive.

去，掉used after a verb to indicate completion of an action

• 冷却

  cool down

• 忘却

  forget

• 失却信心

  lose confidence

• 抛却

  abandon

• 失却

  lose