Imperturbable
Related Definitions
[adj] not easily perturbed or excited or upset; marked by extreme calm and composure; "hitherto imperturbable, he now showed signs of alarm"; "an imperturbable self-possession"; "unflappable in a crisis"
Related Terms
balanced, bovine, collected, complacent, composed, cool, dispassionate, dull, even-tempered, fast, fiducial, firm, firm as Gibraltar, impassive, in equilibrium, inexcitable, inirritable, nonchalant, patient, predictable, reliable, secure, self-satisfied,