Queer has traditionally meant odd or unusual, though modern use often pertains to LGBT (gay, lesbian, bisexual, trans-gender, intersex and non-normative heterosexual) people. Its usage is considered controversial and underwent substantial changes over the course of the 20th Century with some LGBT people re-claiming the term as a means of self-empowerment. The term is still considered by some to be offensive and derisive, and by others as a re-appropriated term used to describe a sexual orientation and/or gender identity or gender expression that does not conform to heteronormative society.
