補充
ほじゅう · hojuu · JLPT N1 · noun
supplement
充 — 育 (raise/grow) on top of 儿 (legs/person)
Originally depicted a person walking forward, suggesting movement and advancement. The form combines a growth element above with a person below, evoking the sense of being filled up or made full as one grows. Over time, the meaning shifted from 'go forward' to 'fill, fulfill, abundant'.