Antonyms of adj unflappable

1 sense of unflappable

Sense 1
imperturbable, unflappable -- (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")

INDIRECT (VIA composed) -> discomposed -- (having your composure disturbed; "looked about with a wandering and discomposed air")

Similarity of adj unflappable

1 sense of unflappable

Sense 1
imperturbable, unflappable -- (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")
       => composed (vs. discomposed) -- (serenely self-possessed and free from agitation especially in times of stress; "the performer seemed completely composed as she stepped onto the stage"; "I felt calm and more composed than I had in a long time")