a Japanese verbal inflection that is considered irregular

(Classical Japanese grammar) a verbal conjugation class in which the verb stem ends in n-

(grammar) a verbal conjugation class in which the verb stem ends in k-, with minor historical changes

(grammar) a verbal conjugation class in which the verb stem ends in s-

(Classical Japanese grammar) a verbal conjugation class in which the verb stem ends in r- with four irregular bases: -a, -i, -u, and -e

a word, a shortest part that means something in a sentence

difficult / hard, probably impossible

to recall, to remember / to learn / to memorize / to feel (an emotion or sense)

to remember, to recognize, to look familiar

"sleeping in the springtime, unaware of dawn": referring to sleeping in late on a comfortable spring day