1. Not anticipated
   "unanticipated and disconcerting lines of development"
   - unforeseen, unlooked-for, out of the blue

See also: unexpected

• radiotelephone
• radiotelephonic
• radiotelephony
• radiotherapist
• radiotherapy
• radiotherapy equipment
• radiothorium
• radish
• radish plant
• radium
• radium therapy
• radius
• radius of curvature
• radius vector
• radix
• radome
• radon
• radula
• Radyera
• Radyera farragei
• raetam
• RAF
• Raffaello Santi
• Raffaello Sanzio
• raffia