Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb rattle

2 senses of rattle

Sense 1
rattle -- (make short successive sounds)
       => sound, go -- (make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'")
          Phrasal Verb-> rattle off#1; rattle down#1; rattle on#1

Sense 2
rattle -- (shake and cause to make a rattling noise)
       => shake, agitate -- (move or cause to move back and forth; "The chemist shook the flask vigorously"; "My hands were shaking")

Antonyms of adj rattled

1 sense of rattled

Sense 1
flustered, hot and bothered (predicate), perturbed, rattled -- (thrown into a state of agitated confusion; (`rattled' is an informal term))

INDIRECT (VIA discomposed) -> composed -- (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")

Similarity of adj rattled

1 sense of rattled

Sense 1
flustered, hot and bothered (predicate), perturbed, rattled -- (thrown into a state of agitated confusion; (`rattled' is an informal term))
       => discomposed (vs. composed) -- (having your composure disturbed; "looked about with a wandering and discomposed air")