1 source (of information etc)

2 origin

1 infection

2 to infect

3 to influence

1 to dye

2 to catch (a disease)

3 to acquire (bad habits etc)

4 to contaminate

5 to add color washes to a painting

1 pollution

2 contamination

3 classifier: 个 gè

1 has its origins in

1 untainted by even a speck of dust (idiom); selfless and incorruptible

2 spotless

1 lit. to grow out of the mud unsullied (idiom)

2 fig. to be principled and incorruptible

1 lit. to strike water right and left (idiom)

2 fig. to turn everything into gold

3 to have everything going one's way

4 to benefit from both sides

1 to dip a finger (idiom); fig. to get one's finger in the pie

2 to get a share of the action

3 abbr. for 染指於鼎|染指于鼎

1 lit. dirty finger, mouth watering (idiom); fig. greedy to seize sth