1 private

2 personal

3 interpersonal

4 sb with whom one has a close personal relationship

5 a member of one's clique

1 private correspondence

2 personal letter

3 (computing) personal message (PM)

4 to message sb

1 selfish

2 selfishness

1 secrets

2 private business

3 privacy

1 surname Qiu

1 a wrong suffered (idiom)

2 old grievance

3 previous defeat

1 when the enemies come face to face, their eyes blaze with hatred (idiom)

1 to use one's position for personal gain (idiom)

1 official authority used for private interests (idiom); to attain private ends by abusing public position

1 for the common good and forgetting personal interests (idiom); to behave altruistically

2 selfless