to be certain that something is true or will happen
何かが本当であること、または起こることを確信する (nanika ga hontou de aru koto, mata wa okoru koto o kakushin suru)
"You can take it to the bank that he’ll deliver on his promise."
"彼が約束を守ることを確信しています。" (kare ga yakusoku o mamoru koto o kakushin shite imasu)
to start doing something with enthusiasm
to leave for a particular place
to pay for something, especially as a treat for others
to pursue what you truly want in life
a situation in which virtue is rewarded and vice is punished...
feeling nervous or anxious