in·for·mal·i·ty 
(ĭn′fôr-mălĭ-tē)
(ĭn′fôr-mălĭ-tē)n. pl. in·for·mal·i·ties
1. The state or quality of being informal.
2. An informal act.
- "Fighting Joe."
- "Fighting Joe."
- fightingly
- fighting words
- fight off
- fight-or-flight response
- fight shy of
- fig leaf
- fig marigold
- figment
- figural
- figurally
- figurant
- figuration
- figurative
- figuratively
- figurativeness
- figure
- figured
- figured bass
- figure eight
- figurehead
- figure in
- figure of speech
- figure on