か弱い[kayowai] frail
ひ弱い[hiyowai] weak
意志薄弱[ishihakujaku] weak-willed
胃弱[ijaku] dyspepsia
虚弱[kyojaku] feebleness

強弱[kyoujaku] strength
弱い[yowai] weak
弱い者[yowaimono] weak person
弱い相互作用[yowaisougosayou] weak interaction (physics)

意志[ishi] will
意志の強い[ishinotsuyoi] strong-minded
意志の疏通[ishinosotsuu] mutual understanding
意志決定機関[ishiketteikikan] decision-making body
意志薄弱[ishihakujaku] weak-willed

意志決定[ishikettei] decision-making
遺志[ishi] dying wish
厚志[koushi] kind intention
志す[kokorozasu] to plan

犬薄荷[inuhakka] catnip (Nepeta cataria)
意志薄弱[ishihakujaku] weak-willed
佳人薄命[kajinhakumei] beauties die young
極薄[kyokuhaku] ultrathinness
軽薄[keihaku] frivolous

軽佻浮薄[keichoufuhaku] frivolous and thoughtless
厚薄[kouhaku] thickness
精神薄弱[seishinhakujaku] mental retardation
精薄[seihaku] mental retardation (pejorative)
浅薄[senpaku] shallowness

行けない[ikenai] wrong
行る[yaru] to send
オリエント急行[orientokyuukou] Orient express
カ行[kagyou] classification for Japanese verb with the dictionary form ending in "ku"
ガ行[gagyou] classification for Japanese verb with the dictionary form ending in "gu"

サ行[sagyou] classification for Japanese verb with the dictionary form ending in "su"
ザ行[zagyou] classification for Japanese verb with the dictionary form ending in "zu"
スパイ行為[supaikoui] espionage
タ行[tagyou] classification for Japanese verb with the dictionary form ending in "tsu"
ダ行[dagyou] classification for Japanese verb with the dictionary form ending in "dzu"