1. In theory; according to the assumed facts 
2. In a theoretical manner
   "he worked the problem out theoretically"

See also: theoretical

Antonym: empirically

• Jakob Hermandszoon
• Jakob Liebmann Beer
• Jakob Ludwig Felix Mendelssohn-Bartholdy
• Jakob Ludwig Karl Grimm
• Jakob-Creutzfeldt disease
• Jakobson
• Jalalabad
• jalap
• jalapeño
• jalapeño pepper
• jalopy
• jalousie
• jam
• jam session
• jam-packed
• Jamaat ul-Fuqra
• Jamaica
• Jamaica apple
• Jamaica bayberry
• Jamaica caper tree
• Jamaica dogwood
• Jamaica honeysuckle
• Jamaica quassia
• Jamaica rum
• Jamaica shorts