adjective
queerer; -est
old-fashioned :odd or unusual
informal + usually offensive :homosexual
Queer in this sense is offensive in most of its uses, but it is also now sometimes used in a neutral or positive way especially by some homosexual and bisexual people.
noun
plural queers
[count] informal + usually offensive :a homosexual person
verb
queers; queered; queering
[+ obj] informal :to spoil or ruin (something)