In her book "Surprise Me," Sophie Kinsella introduces the term "frusture," describing it as a unique blend of frustration and fury experienced specifically in a marital relationship. This feeling arises when a husband’s actions seem deliberately irritating, leading to a heightened sense of annoyance. The intensity of frustration in this context is amplified by a perception that the husband is intentionally provoking these emotions.

Kinsella captures the complexities of marital dynamics, where love and irritation often coexist. The concept of frusture reflects the familiar yet maddening aspects of living closely with someone, highlighting how partners can elicit strong reactions from each other while navigating the ups and downs of their relationship.