unflappable 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" [syn: imperturbable]

English

Adjective

1. remaining composed and levelheaded at all times; unswayed by adversity or excitement; impossible to fluster; not to get frustrated or irritated easily.

Synonyms

• collected
• cool
• even-keeled

balanced, bovine, collected, composed, constant, cool, dispassionate, dull, easy, even-tempered, fast, fiducial, firm, firm as Gibraltar, fixed, flinty, immovable, impassive, imperturbable, in equilibrium, inexcitable, inflexible, inirritable, loyal, nonchalant, patient, predictable, relaxed, reliable, secure, set, settled, solid, sot, sound, stable, staunch, steadfast, steady, steely, stoic, stolid, substantial, true, unbending, undeflectable, undisturbable, unflinching, unirritable, unnervous, unpassionate, unruffled, unshakable, unshaken, unswerving, unwavering, unyielding, well-balanced, without nerves