The Day Slang Was Put in Charge of the Rules

The Mayor gave Slang the rulebook for a day to prove a point. Name the one rule Slang added.

Coordinating conjunction (FANBOYS)Try but or and.Concrete common nounSomething you can see, hear, smell, taste, or touch: ladders, pigeons, doorbells.Adverb (when)Try again, by degrees, or on the spot.Mild interjection (comma)Try Well, Hm, or Fine.Adverb (how)Try grudgingly, softly, or with immense effort.Collective nounA word that names a group of people or things: office, bench, procession.

6 down, 6 to go

Adverb (how)Try once, publicly, or in nine years.Descriptive adjectiveTry towering, dusty, or sacred.Adverb (how)Try properly, a second time, or without complaint.Descriptive adjectiveTry short, obvious, or overdue.Adverb (how)Try silently, without pausing, or without reading it.Adverb (to what extent)Try plainly, under his breath, or desperately.

Every blank has to be filled before this one can finish. Let's go.