Definitions

1. noun

A woman who abandons or deserts her husband.

“In the 19th-century novel, the protagonist was a desertress, leaving her husband for another man.”

2. noun

A person who abandons or deserts their companions or companionship, often in a situation where they are expected to remain loyal or committed.

“The desertress of the group caused a heated debate among the members about their trust and loyalty.”