To Threaten
transitive verb, godan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means threaten and the verb vocab version is to threaten.
おどす
I'm going to threaten you with your life if you have a bad odor (おど). Imagine someone with a bad odor, then threaten them.
その教師は何名かの男子生徒を刃物で脅したとして解雇されました。
That teacher was fired because he threatened some male students with a knife.