Equanimous

a.

1.

Of an even, composed frame of mind; of a steady temper; not easily elated or depressed.

Adj.

1.

equanimous - in full control of your faculties; "the witness remained collected throughout the cross-examination"; "perfectly poised and sure of himself"; "more self-contained and more dependable than many of the early frontiersmen"; "strong and self-possessed in the face of trouble" Synonyms: self-collected, self-possessed, self-contained, poised, collected

collected, composed, poised, self-collected, self-contained, self-possessed