1. Without sleep; in a sleepless manner
   "he was lying in bed sleeplessly"

See also: sleepless

• experimental method
• experimental procedure
• experimental psychology
• experimental variable
• experimentalism
• experimentally
• experimentation
• experimenter
• experimenter bias
• expert
• expert witness
• expertise
• expertly
• expertness
• expiable
• expiate
• expiation
• expiative
• expiator
• expiatory
• expiration
• expiratory
• expire
• expired
• expiry