On rainy afternoons I relax by solving challenging killer sudokus with a cup of tea.

I spent the evening solving a difficult killer sudoku that required careful attention to the sums in each cage to avoid repeating digits.

The proposed non-compete clause turned out to be a deal killer during the contract negotiations.

In the university archive, a researcher found the word nigger-killer in a Civil War diary and noted it as an alternative form of a racist epithet, warning readers about its hateful meaning.

Everyone was having a great night until Tom, the craic killer, complained about the music and ruined the mood.

The linguistics professor warned that killer languages could wipe out minority dialects if they spread unchecked.

Her cold, clinical approach to intimacy was a boner-killer for him.

Researchers observed that killer T cells rapidly target and eliminate virus-infected cells in the tissue sample.

The research lab focused on how a killer T cell recognizes and destroys virus-infected cells.

A single natural killer cell can distinguish infected cells from healthy ones by using surface receptors that send either activating or inhibitory signals.