to fall asleep suddenly, especially when sitting
座っているときに突然眠り込むこと (suwatte iru toki ni totsuzen nemurikomu koto)
"He nodded off during the boring lecture."
"彼は退屈な講義の間にうとうとした。" (kare wa taikutsuna kougi no aida ni utouto shita)
to say something embarrassing or inappropriate by mistake
to use something until it becomes unusable
a period when prices of stocks are rising
to set very high goals
A period when the economy declines or slows down.
to end a romantic relationship suddenly or unkindly
