Etymology. From ants + -y, as in ants in one's pants. First noted as a rural Southern USA figure of speech in the early 20th century.
Is Antsy a British word?
I only discovered that antsy was American when the Association of British Scrabble Players moved to a combined British-American dictionary (soon to be replaced by another one). Antsy is an important word to Scrabblers because of its comparative form: antsier.
What does antsy mean in America?
If someone is antsy, they are nervous or impatient.
Is it Antsy or Ancy?
restless, impatient, unsettled.