1. To a high degree or extent; favourably or with much respect
   "extremely interesting"
   - highly, majorly 
2. To an extreme degree
   "extremely cold"; "extremely unpleasant"
   - exceedingly, super, passing

See also: extreme

• cantharidin
• canthus
• canticle
• Canticle of Canticles
• Canticle of Simeon
• Canticles
• cantilever
• cantilever bridge
• cantillate
• cantillation
• cantina
• cantle
• canto
• canton
• Canton crêpe
• Canton flannel
• Canton ginger
• Canton River
• cantonal
• Cantonese
• Cantonese dialect
• cantonment
• cantor
• cantref
• cantrip