1. Genuinely; with authority
   "it is authentically British"
   - genuinely

See also: authentic

• beta-interferon
• beta-lactamase
• beta-lipoprotein
• beta-naphthol
• betaine
• betake
• betake oneself
• betatron
• betcha
• betel
• betel nut
• betel palm
• betel pepper
• Betelgeuse
• beth
• Bethe
• bethel
• bethink
• Bethlehem
• Bethlehem Ephrathah
• Bethlehem-Judah
• Bethune
• betide
• betimes
• betoken