IPA: /ˈdɛθli/
KK: /ˈdɛθli/
Causing or resembling death; often used to describe something that is very quiet or lifeless.
The room fell into a deathly silence after the announcement.
Comparative: more deathly
Superlative: most deathly
In a way that is extremely or very intense, often related to death or a lifeless state.
The silence in the room was deathly, making everyone feel uneasy.
Deathly → It is formed from "death" (from Old English "deað", meaning the end of life) and "-ly" (meaning in a manner of). The word "deathly" describes something that is in the manner of death or resembles death.
Think of something that is 'in the manner of' ('-ly') 'death' — that's why deathly means resembling or characteristic of death.