(idiomatic) bright, intelligent, sharp

a surname

a head as hard as a stone / stubbornness and inflexibility / an inflexible person

お玉杓子, 御玉杓子: a tadpole

a ladle (deep-bowled spoon with a long, usually curved, handle) / (music, rare) a musical note / a tadpole (toad or frog larva)

cold, distant

main, important / valuable / notable

Kyūjitai form of 軽軽しい (“rush; hasty”)

hardworking, painstaking, diligent, conscientious, sincere

聾, 耳癈: (archaic, possibly obsolete) deafness, deaf / 聾, 耳癈: (archaic, possibly obsolete) a deaf person