苦悩[kunou] suffering
子煩悩[kobonnou] indulgent
思い悩む[omoinayamu] to worry
伸び悩む[nobinayamu] to be sluggish (business)
頭を悩ます[atamawonayamasu] to rack one's brains

悩ましい[nayamashii] seductive
悩ます[nayamasu] to afflict
悩み[nayami] trouble
悩みごと[nayamigoto] something causing worry
悩む[nayamu] to be worried

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"