The Collaborative International Dictionary
Equanimous \E*quan"i*mous\, a. [L. aequanimus, fr. aequus equal
+ animus mind.]
Of an even, composed frame of mind; of a steady temper; not
easily elated or depressed.
--Bp. Gauden.
Douglas Harper's Etymology Dictionary
"of a steady temper," 1650s, from Latin aequanimis "mild, kind" (see equanimity) + -ous.
Wiktionary
a. Calm and composed; of stable disposition.
WordNet
adj. 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" [syn: collected, poised, self-collected, self-contained, self-possessed]
Usage examples of "equanimous".
And when I saw the little house and the quiet, peaceful landscape and heard of the lonely, sober, chaste life of this equanimous and devout Jew, I desired for myself no better lot than to be able to follow his example as soon as possible.