Equable (adjective)

1. Even-tempered, calm and steady; not easily upset or disturbed.
2. Not varying greatly; regular, steady.

Origin:

From middle english equabil, from old french equable, from latin aequabilis, from aequus ("equal, level") + -abilis ("-abl.e")

Examples:

1. She has an equable temperament, never getting too excited or upset.
2. His voice was equable and soothing, calming the anxious patient.
3. The weather was equable, with only a few clouds in the sky.
4. His moods were equable, almost never showing any signs of anger or frustration.
5. The company's financial situation was equable, with steady growth and no major fluctuations.