HSK10+
sōu
spoiled
Old 叟 food 飠; 叟 also provides the pronunciation
飠 Meaning component
shí
eat
叟 Sound Meaning component
sǒu
old man
馊 (餿)
spoiled, rotten, stale, rancid; rancid; soured (as food)
馊主意
rotten idea
馊
rancid
Make Me a Hanzi
Unicode
CC-CEDICT
SUBTLEX-CH
MTSU Chinese text computing