Flaky /(?)/

Flak·y

Flaky

a.
  1. Consisting of flakes or of small, loose masses; lying, or cleaving off, in flakes or layers; flakelike.
    What showers of mortal hail, what flaky fires!
    — Watts.
    A flaky weight of winter's purest snows.
  2. prone to strange or erratic behavior; -- of persons.
  3. odd, unpredictable or unconventional; offbeat; whacky; -- of behavior.
  4. unpredictable, erratic, or unreliable; -- of machinery, especially electronic devices.