1. Characterized by jerky movements
   "a jittery ride" 
2. Being in a tense state
   - edgy, high-strung, highly strung, jumpy, nervy, overstrung, restive, uptight

See also: jitter, jitteriness, tense

• penicillin-resistant bacteria
• penicillinase
• penicillinase-resistant antibiotic
• Penicillium
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• Penn
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