1. Not converted into ions
   - nonionised [Brit], unionized, unionised [Brit], nonionic

Antonym: ionized

• so far
• so long
• so much
• so that
• so there
• so to speak
• so what
• so-and-so
• so-called
• so-so
• soak
• soak through
• soak up
• soakage
• soakaway
• soaked
• soaker
• soaking
• soaking up
• soap
• soap bubble
• soap dish
• soap dispenser
• soap film
• soap flakes