adj

• (dated) Strange, odd, or different; whimsical.
  "An old long-faced, long-bodied servant, gave a queer look"
• (British, informal, dated) Slightly unwell.
  "I felt queer after eating those shrimp."
• (British, slang, dated) Drunk.
• (colloquial, sometimes derogatory) Homosexual.
  "“Such a Momma’s boy.” The old men had started up again—or perhaps they had never stopped. “No matter who he schtupped. Even Marilyn. I wouldn’t be surprised he was queer.” / “Strange, yes. Weird, yes. Queer, I don’t think.”"

noun

• (colloquial, sometimes derogatory) A person who is or appears homosexual, or who has homosexual qualities.
  "Now that the first flush of this catastrophe and grief is passed, I write to tell you that it is a judgement on the whole lot of you. Montgomerys, The Snob Queers like [the Earl of] Rosebery & certainly Christian hypocrite [William Ewart] Gladstone [...]"
• (colloquial, sometimes derogatory) A person of any non-heterosexual sexuality or sexual identity.
• (colloquial, sometimes derogatory) A person of any genderqueer identity.
  "Gentrification often starts with the artists, revolutionaries, freaks, transfolks, and queers (what I would call my people) moving into poor neighborhoods inhabited by people of color."
• (with definite article, informal, archaic) Counterfeit money.
  "You're shoving the queer."

verb

• (transitive, dated) To render an endeavor or agreement ineffective or null.
  "I was a lot more apt to queer it than help it."
• (UK, dialect, dated) To puzzle.
  ""But lor-a-mussy, Jacob, how could a woman get away from here with all her boxes in the middle of the night?" "That's what queered me," and Spink slowly shook his head, "and queered a good many; for of course it got newsed about […]""
• (slang, dated) To ridicule; to banter; to rally.
• (slang, dated) To spoil the effect or success of, as by ridicule; to throw a wet blanket on; to spoil.
  ""Food is what queered the party. We ordered a big supper to be sent up to the room about two o'clock. Alec didn't give the waiter a tip, so I guess the little bastard snitched.""

adv

• (Ireland) Very, extremely.
  "Twas a queer bachram in the pub that night!"