1. (used especially of ideas or principles) deeply rooted; firmly fixed or held
   "deep-seated differences of opinion"
   - deep-rooted, implanted, ingrained, planted

See also: constituted, established

• factitive
• factoid
• factor
• factor analyse
• factor analysis
• factor analytic
• factor analytical
• factor analyze
• factor I
• factor II
• factor III
• factor in
• factor IV
• factor IX
• factor of proportionality
• factor of safety
• factor out
• factor V
• factor VII
• factor VIII
• factor X
• factor XI
• factor XII
• factor XIII
• factorage