Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Very unconventional or unusual.
  • adjective Exhibiting bizarre behavior; crazy.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective idiomatic Wildly unconventional; bizarre; absurd.
  • adjective idiomatic Greatly inappropriate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective conspicuously or grossly unconventional or unusual

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Perhaps from baseball or other games played with a ball, alluding to unpredictable bounces.

Examples

Comments

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