1. Not reversible or capable of having either side out
   - one-sided

Antonym: reversible

• wizard
• wizardly
• wizardry
• wizen
• wizened
• WLAN
• WMD
• WMO
• WNW
• wo
• woad
• woadwaxen
• wobbegong
• wobble
• wobble board
• wobbler
• wobbling
• wobbly
• Wodan
• Wodehouse
• Woden
• wodge
• woe
• woe is me
• woebegone