Cuckquean
Also: cuckqueen, female cuckold
The female-presenting counterpart to a cuckold: a woman whose arousal is built around her partner having sex with others, often involving themes of watching or relative submission. Consensual by definition.
A cuckquean is, in the consensual kink sense, a woman who derives arousal from her partner's sexual experiences with other people — the gender-mirror of the cuckold dynamic. The erotic charge often involves watching, hearing about, or being kept slightly outside the encounter, and sometimes a power-exchange element in which the cuckquean takes a more submissive role. The word is the centuries-old feminine form of 'cuckold,' revived for the modern reclaimed kink.
Cuckquean dynamics are discussed less than their male counterpart, but they follow the same structure and the same ethics. The defining feature is consent: this is a negotiated dynamic everyone wants, not the non-consensual betrayal the old word once implied. The outside partner the husband or partner sees is a full participant whose own consent and wellbeing matter.
As with all kink under the ENM umbrella, healthy practice depends on explicit negotiation, clarity about fantasy versus reality, aftercare for the strong feelings it can surface, and treating everyone involved as a person rather than a prop.