1 to react

2 to respond

3 reaction

4 response

5 reply

6 chemical reaction

7 classifier: 个 gè

1 anyway

2 in any case

3 to come over from the enemy's side

1 contrary

2 in reverse

3 inside out or upside down

4 to reverse

5 to return

6 to oppose

7 opposite

8 against

9 anti-

10 to rebel

11 to use analogy

12 instead

13 abbr. for 反切[fǎn qiè] phonetic system

1 (Chinese opera) to play a role outside of one's specialty

2 (modern) to play a transvestite role

3 to masquerade as an opponent

1 on the other hand...

2 conversely...

1 complete change from the normal state (idiom); quite uncharacteristic

2 entirely outside the norm

3 out of character

1 lit. the other mountain's stone can polish jade (idiom); to improve oneself by accepting criticism from outside

2 to borrow talent from abroad to develop the nation effectively

1 lit. use sb's spear to attack his shield (idiom, derived from Han Feizi 韓非子|韩非子); turning a weapon against its owner

2 fig. to attack an opponent using his own devices

3 hoist with his own petard

1 to catch an enemy off guard with a surprise attack (idiom, from Sunzi's "The Art of War" 孫子兵法|孙子兵法[Sūn zǐ Bīng fǎ])

1 old: to reap the consequences of one's words (idiom, from Mencius); modern: to go back on one's word

2 to blow hot and cold

3 to contradict oneself

4 inconsistent