temperamental

Meanings

1. 1
   adj

   subject to sharply varying moods

   a temperamental opera singer

2. 2
   adj

   relating to or caused by temperament

   temperamental indifference to neatness

3. 3
   adj

   likely to perform unpredictably

4. 4
   adj

   Of, related to, or caused by temperament.

5. 5
   adj

   Subject to changing and unpredictable emotional states; moody, capricious.

6. 6
   adj

   User-unfriendly, unstable, that is complicated or has poorly written instructions and is subsequently difficult to operate; unpredictable and erratic.

Etymology

From temperament + -al.