sizeism
weightism

Like other forms of discrimination, sizeism isn't always explicit.

Sizeism, being a newly realized discriminatory belief, is usually observed by those who are sufferers.

In the USA, the list of anti-discrimination acts do not include sizeism specifically as an offense.

Size discrimination or sizeism is a form of discrimination based upon a person's physical size, including but not limited to height and/or weight.

Sizeism usually refers to extremes in physical size, as in an extremely tall person or an extremely skinny person.

Sizeism can be based on height, weight or both, and so is often related to height- and weight-based discrimination but is not synonymous with either.

'Oh, she's definitely a 'round' all right!,'says the Blonde One, joining in my good-natured sizeism.

Her songs touched the usual filk topics of science fiction, fantasy, and cats, but also feminism, love, Paganism, and Sizeism.

However by the time Joey is revealed as the killer, his true colours have surfaced and he is shown to be extremely judgemental, showing homophobia, sizeism, racism and elitism.

In some regions, anti-discrimination laws are in place to prohibit sizeism, along with other forms of discrimination, but sizeist stereotypes (such as "overweight people are lazy", "skinny people are mean" or "tall people can play basketball") are often ingrained in modern society.