That's distasteful! Unpleasant! But "Iya can mean "no" or "I refuse" when used alone as an exclamation. This word can be further shorted into "Ya" or "Ya da!", with the "Da" added for emphasis. Pronounced "Ee-yah"

(Lu.) Mother. Iya Ilu (Lu.) Mother drum. The lead drum in the ba tà ensemble.

In Lakota mythology, Iya is a storm-monster, brother of Iktomi the spider. He eats humans and spreads diseases. This fact, however, does not make him bad or evil; he simply performs a duty and is considered a sacred being by those who consider the old legends as truth.