1. Previously unknown
   "developments on an unheard-of scale"

See also: unknown

• chirography
• chirology
• chiromance
• chiromancer
• chiromancy
• chiromantic
• Chiron
• Chironomidae
• Chironomus
• chiropodist
• chiropody
• chiropractic
• chiropractor
• Chiroptera
• chiropteran
• chirp
• chirper
• chirpily
• chirpiness
• chirpy
• chirr
• chirrup
• chirurgeon
• chirurgical
• chisel