Usually a pet form of Valerie or Valentina, from Latin roots meaning "strong" or "healthy."
Vally is usually a pet form of Valerie or Valentina, names that descend from Latin roots meaning strong or healthy. That background gives Vally a gentler surface with a sturdy core. As a diminutive, it feels affectionate and intimate, the kind of name that began as a familiar short form but can stand on its own with enough warmth.
The Latin root is important because it keeps the name from feeling merely cute; underneath, there is a strong and resilient meaning. As a given name, Vally sounds soft, friendly, and slightly old-fashioned in a charming way. It has the kind of compact sweetness that can feel both casual and personal.
Because it is less formal than its full-name relatives, Vally suggests approachability and ease. At the same time, the underlying meaning of strength gives it a nice contrast between surface delicacy and inner durability. It is a small name with a solid foundation.