Don't keep that knot in your heart; let's talk it out.
Tips
usage
瘩 is toneless inside the everyday word 疙瘩 (lump). Dictionaries also list a rare standalone reading 瘩 meaning a sore or scab, but that form is almost never used today.
The sickness radical, a person reclining on a bed. A 疙瘩 is a swelling or bump on the skin, a minor ailment, so the illness radical pins down the meaning.
An older bean graph used purely for its sound dá, which softens to toneless da in the word. It brings no bean meaning into 瘩, only the reading; it is a fuller relative of 答.