Definition, Meaning & Synonyms

dead-serious

adjective

/ˈdɛd ˈsɪərɪəs/

Definition

completely serious; not joking at all.

Examples

She was dead-serious when she said she would quit her job if they didn’t listen to her concerns.
Even in a light-hearted conversation, he can sometimes turn dead-serious just to make his point.

Meaning

When someone is described as dead-serious, it means they are fully sincere and earnest in what they are saying or doing, with no hint of humor or playfulness.