brittly

This adverb describes a state of fragility where a lack of flexibility leads to sudden failure. In a physical sense, it refers to materials that shatter rather than bend, evoking a sharp, snapping sensation. It is often used to describe aged or desiccated objects like old paper, dried twigs, or frozen materials.

When applied to human behavior or speech, the word shifts toward a psychological register. It describes a forced or strained quality in a person's demeanor, such as a laugh or a tone of voice, which suggests that the individual is on the verge of an emotional breakdown or is masking extreme tension with a cold, rigid exterior.