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1. In a state of nervous agitation
   "The more he loses, the more rattled he gets";
   - flustered [informal], hot and bothered [informal], perturbed [informal]
    
2. Having self-possession upset; thrown into confusion
   - discombobulated, disconcerted, thrown

1. Make short successive sounds
    
2. Shake and cause to make a rattling noise
    
3. [informal] Disturb the composure of
   "Good, it shouldn't rattle him at all";
   - faze, unnerve, enervate, unsettle

See also: discomposed, rattle on [informal], roll off

Type of: agitate, discomfit, discompose, disconcert, go, shake, sound, untune, upset

Encyclopedia: Rattled