Meanings of become crisper in English

In Jocelyn's absence his manner seemed to undergo some subtle change, his tone to become crisper and less querulous.

Stranger still, even as the ideology became crisper and the movement more coherent, the lost name was not replaced by any common alternative.

Like many shows, Community significantly improved after its pilot aired, and the show's satirical elements became crisper, all while keeping that element of self-consciousness intact.