The name Mäxi has no documented meaning in the sources checked.
Playful
Cute
Gray, White, Brown, Black, Tan
Any Size
Unisex
German
M
4 Letters
Recorded as a masculine given name in Popular Culture
A surname of German origin, associated with the artist Paul Klee or a reference to 'clover' in some contexts.
Recorded as a given name in English (Modern) and Western African use