English diminutive of Wade or a pet form of Walter; also an English place name from Old English.
Waddy is an English diminutive of Wade or a pet form of Walter; it is also an English place name from Old English. That gives it both affectionate and geographic possibilities, which is typical of older English nicknames and surname-derived names.
The name has a straightforward, rural, and historically grounded feel. Waddy sounds friendly, unpretentious, and compact. It has the easy familiarity of a nickname that may have escaped into wider use, and that gives it a lightly playful quality.
In modern context it is rare, which helps it feel distinctive without losing its plainspoken charm. Waddy suggests simplicity, local history, and the warm practicality of an English diminutive that has held onto its character.