unflappable

• POS: Adjective
• HYPHEN: un=flap=pa=ble

OXFORD DICTIONARY

unflappable, adj. colloq. imperturbable; remaining calm in a crisis.

Derivative

unflappability n. unflappably adv.

THESAURUS

unflappable

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