臆病
おくびょう · okubyou · JLPT N1 · na-adj
timidity
🐰 臆 (heart/chest) + 病 (sickness) = a sick heart that flinches from fear
臆 means chest or heart, and 病 means illness. Together they describe a heart made sick by fear, so it shrinks from danger. Rabbits are a classic timid animal, which fits the meaning.
病 — sickness radical 疒 + 丙 (bǐng, phonetic)
病 is a semantic-phonetic compound. The radical 疒 depicts a person lying on a bed and signals illness or ailment. The component 丙 supplies the sound (bǐng → bìng). Originally 病 referred to a serious illness, contrasted with 疾 for a lighter ailment; today it broadly means 'sick' or 'disease.'