1. Used as a greeting
   - aloha [US], g'day [Austral], greetings, hi, hello, hiya, hallo, howdy, howzit [S.Africa], yo, wotcha [Brit], wotcher [Brit]

Encyclopedia: Gidday

• extravaganza
• extravasate
• extravasation
• extravascular
• extravehicular
• extraversion
• extraversive
• extravert
• extraverted
• extravertive
• extreme
• extreme point
• extreme right-winger
• extreme unction
• extremely
• extremely high frequency
• extremely low frequency
• extremeness
• extremism
• extremist
• extremity
• extremum
• extricable
• extricate
• extrication