A strict vegetarian; someone who eats no animal or dairy products at all WordNet 3.0

A strict vegetarian; someone who eats no animal or dairy products; may also avoid using animal products (e.g. leather) Open English WordNet

A way of life which strictly avoids use of any kind of animal for any purpose. OmegaWiki

Someone who does not use or consume animal products of any kind. OmegaWiki

A person committed to avoiding products and practices that inherently involve animal use, including all foods containing animal products, and to abstaining from direct and intentional harm to animals as far as possible; an adherent to veganism. Wiktionary