Antonyms of adj unflustered

1 sense of unflustered

Sense 1
unflurried, unflustered, unperturbed, unruffled -- (free from emotional agitation or nervous tension; "the waiters were unflurried and good natured"; "with contented mind and unruffled spirit"- Anthony Trollope)

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

Similarity of adj unflustered

1 sense of unflustered

Sense 1
unflurried, unflustered, unperturbed, unruffled -- (free from emotional agitation or nervous tension; "the waiters were unflurried and good natured"; "with contented mind and unruffled spirit"- Anthony Trollope)
       => 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")