The name allie is a diminutive form of the name alison or alexandra. It is of greek origin and means defender of mankind or protector. allie is a name often given to girls and is associated with รขโ‚ฌยฆ The storyline on glee captures something larger that we are seeing with a new generation of allies (allies are people who support lgbt rights but aren't lgbt themselves).

As proper nouns the difference between ally and allie is that ally is a diminutive of the female given names alison, alice and alexandra while allie is a diminutive of female given names like alice, รขโ‚ฌยฆ Allie caulfield, holden caulfield's dead brother in the novel the catcher in the rye by j. d. Salinger allie fox, from the book the mosquito coast and its movie adaptation