疾

• Medical: Illness, disease, or sickness; often denotes an acute, sudden, or sharp affliction.
• Velocity: Fast, rapid, or swift; implies urgency, violence, or a piercing quality (e.g., 疾風 "violent wind").
• Affective: To hate, loathe, or feel strong aversion toward.

• Primarily a noun in the sense of illness.
• Functions as an adjective or adverb in the sense of speed (e.g., 疾行 "to walk/march rapidly").
• Functions as a transitive verb in the sense of hatred.

// Contrast with 病 (//bìng*): 疾 frequently refers to the specific ailment or the "attack" of the disease, while 病 refers to the general state of being ill.

// Contrast with 速 (//sù*): While 速 typically denotes rate of speed, 疾 implies urgency or violence.

// Contrast with 恨 (//hèn*): 疾 describes an active resentment or "sharp" dislike rather than brooding or lingering regret.

The glyph is highly polysemous. Selection depends on whether the surrounding context concerns the body (affliction), movement (speed), or interpersonal relationships (hatred).