| jí | sickness/disease/hate/envy/swift |
| 疾 | sickness disease hate |
| 疾书 | scribble rapidly |
| 疾呼 | call on |
| 疾恶如仇 | hating evil as an enemy (idiom); to hate the wicked as personal foes |
| 疾患 | affection |
| 疾步 | at a fast pace |
| 疾病 | disease sickness ailment |
| 疾病保险 | sickness insurance |
| 疾病分类学 | nosology; nosonomy |
| 疾病学 | nosography |
| 疾病控制中心 | Centers for Disease Control (CDC) |
| 疾病突发 | outbreak of illness seizure |
| 疾病预防中心 | Center for Disease Control (US) |
| 疾苦 | pain and difficulties suffering (of the people) |
| 疾言厉色 | to be brusque with someone |
| 疾走 | scamper scurry |
| 疾足先得 | The swift-footed arrive first. |
| 疾进 | shoot ahead of |
| 疾速 | very fast at a crazy speed |
| 疾颜厉色 | to be brusque with someone |