informal /in-förˈməl/

1. Not of a formal or conventional nature
2. Characterized by lack of ceremony or formality
3. Relaxed, friendly, unceremonious
4. (esp of clothes) appropriate to everyday or casual use
5. (of speech or writing) having vocabulary, idiom, etc characteristic of conversational speech
6. (of a vote) invalid (Aust and NZ)

informalˈity noun

• walking part
• walking parts
• walking race
• walking races
• walking reins
• walkings
• walking-song
• walking-staff
• walking-staffs
• walking stick
• walking-stick
• walking sticks
• walking-sticks
• walking straw
• walking straws
• walking-ticket
• walking toad
• walking toads
• walking twig
• walking twigs
• walking wounded
• walk-ins
• walk into
• walk it
• Walkman