Opposite words for thirsty:
disinclined, bathed, hesitant, lukewarm, languid, soggy, loath, reluctant, dripping, drenched, hungry, doused, unconcerned, moist, incurious, dank, averse, swamped, drowned, watery, soused, empty, flooded, saturated, disinterested, detached, unenthusiastic, sharp-set, overflowed, insouciant, damp, humid, esurient, indifferent, peckish, waterlogged, unwilling, spiritless, famished, apathetic, aloof, nonabsorbent, undesiring, lackadaisical, uninterested, languorous, soppy, wet, ravenous, stolid, hydrated, halfhearted, casual, soaked, impassive, soaking, deluged, sodden, watered, sopping, empty-bellied, starved, submerged, nonabsorptive, inundated, awash, undesirous, nonchalant, supperless, uneager, washed.
Usage samples:
  1. We were thirsty, and would like to go back to the spring and get some water.
    "Deephaven and Selected Stories & Sketches", Sarah Orne Jewett.
  2. The night was very warm, and I was very thirsty.
    "The War of the Wenuses", C. L. Graves and E. V. Lucas.
  3. My kris is thirsty to drink his blood.
    "Middy and Ensign", G. Manville Fenn.
  4. When she grew thirsty she drank of the clear, cold water that ran through the fields.
    "Little Mr. Thimblefinger and His Queer Country", Joel Chandler Harris.