Frequency: The word is one of the 3000 most common words in English.
You can describe someone’s behaviour as ~ when you think that they are trying to harm you.
The police could have charged them with ~ behaviour...
ADJ: usu ADJ n
~ly
‘This ain’t no affair of yours, boy!’ McClosky said ~ly.
ADV: usu ADV with v
see also threaten , life-~