strange or odd from a conventional viewpoint; unusually different; singular

a queer notion of justice.

of a questionable nature or character; suspicious; shady

Something queer about the language of the prospectus kept investors away.

not feeling physically right or well; giddy, faint, or qualmish

to feel queer.

mentally unbalanced or deranged.

Slang

Disparaging and Offensive

homosexual.

effeminate; unmanly.

Slang . bad, worthless, or counterfeit.

to spoil; ruin.

to put (a person) in a hopeless or disadvantageous situation as to success, favor, etc.

to jeopardize.

Slang

Disparaging and Offensive a homosexual, esp. a male homosexual.

Slang . counterfeit money. ?

queer the pitch

British Informal . to spoil the chances of success.