to not do what one said one would do
言ったことを実行しない (itta koto o jikkou shinai)
"He went back on his word about helping me."
"彼は私を助けるという約束を守らなかった。" (Kare wa watashi o tasukeru to iu yakusoku o mamoranakatta.)
to have ambitious goals and aspirations
to keep an activity or process going
to feel intense fear or horror
to feel slightly ill
to agree with someone
to speak honestly without sugarcoating