IPA: /ˈθrɛtənɪŋ/
KK: /ˈθrɛtənɪŋ/
Causing fear or worry because it seems likely to cause harm or danger.
The dark clouds looked threatening, suggesting a storm was coming.
To express an intention to cause harm or trouble to someone or something.
The dark clouds in the sky are threatening rain later today.
Past: threatened
Past Participle: threatened
Threatening → It is formed from "threat" (from Old English "þreat", meaning a threat or danger) and "-ening" (a suffix used to form present participles indicating an ongoing action). The word "threatening" describes the ongoing action of presenting a threat or danger.
Think of a 'threat' as a sign of danger, and the '-ening' shows that this danger is happening right now.