Definition of equanimous (adjective)
- 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: collected, poised, self-collected, self-contained, self-possessed
Source: Princeton University Wordnet