- ACTUP
- Misbehave
- Malfunction
- Go on the fritz
- Do as toddlers do
- LGBT rights group (whose motto is Silence = Death)
- Steal your baby sister's balloon, stomp on the floor, etc.
- Raise hell
- Be bothersome
- Carry on
- Make a scene
- Throw a scene
- Be naughty
- Get out of line
- Behave rudely
- Behave willfully
- Earn a time-out
- Be a brat
- Cause a ruckus
- Cause trouble
- Behave badly
- Throw a tantrum, say
- Go haywire
- Be bratty
- Behave poorly
- Fuss
- Stop working
- Cause a scene
- Misbehave in class, say
- Start to go haywire
- Throw a tantrum
- Turn unruly
- Step out of line
- Operate annoyingly
- Turn impish
- Behave in an unruly manner
- Turn naughty
- Put on a scene: 2 wds.
- Misbehave: Colloq.
- Be fractious.
- Be fractious: Colloq.
- Be refractory.
- Behave playfully: Colloq.
- Make mischief.
- Show off.
- Cut a caper.
- Behave obstreperously.
- What brats do
- Create a fuss
- Make trouble
- Become troublesome
- Recur, as arthritis
- Start to malfunction
- Scream or be rowdy, as a child
- Make a nuisance of oneself
- Not perform as expected
- Start sputtering, say
- Throw a hissy fit
- L.G.B.T.-aligned advocacy group since 1987
- Make a scene, aptly
- Activist group whose motto is "Silence=Death"
- Activist group associated with the slogan "Silence = Death"
- Be on the fritz
- Earn a time-out, perhaps
- Be rowdy
- Be mischievous
- Emulate a brat
- Deserve a punishment
- Be rowdy and disruptive
- Org. fighting to end AIDS ... and a hint to what's hidden in reverse, and progressively higher, in 34-, 21-, 9- and 11-Down
- Behave like a brat
- Get rowdy, e.g.
- Group founded to combat AIDS
- Recur, in a way
- Annoy the sitter
- Provoke one's parents
- Make mischief, and a hint to what's found in 3-, 5-, 7-, 34- and 38-Down
- What misbehaving toddlers do
- Earn a timeout, maybe
