1. According to custom or rule or natural law
   - lawful

See also: regular

• profligately
• profluence
• profound
• profoundly
• profoundly deaf
• profoundness
• profundity
• profuse
• profusely
• profuseness
• profusion
• prog
• progenitor
• progeny
• progeria
• progestational
• progesterone
• progestin
• progestogen
• prognathic
• prognathism
• prognathous
• Progne
• Progne subis
• prognosis