the roof falls / caves in

the roof falls / caves in informal especially AmEif the roof falls in or caves in, something bad suddenly happens to you when you do not expect it飞来横祸; 突遭不幸⇒raise the roof at RAISE¹ (23)⇒SUNROOF

• arsenious
• CEA
• step up to the plate
• precipiced
• reckon without
• in the making
• on the heavy
• not so/too hot
• have a fit/have fits/throw a fit
• floating anchor
• anyplace
• sexpots
• boult
• musk turtle
• internationalities
• zincified
• ambatch
• handicapped person's driving licence
• stitch
• broadaxes
• diamond-point
• TWSS
• colcothar
• faconne
• weighting
• bravoes
• get the right end of the stick
• podgily
• name after
• hold counsel with
• braked
• performatory
• chorus effect
• put (或 get) a quart into a pint pot
• Palaeotheriidae
• frankensteins
• conceders
• iodoformism
• bucketfuls
• calculating machine
• send-up
• climatize
• Watson, James Dewey
• buckskin
• blameless
• echoencephalographical
• reflectorizes
• actual decimal point
• lickspittles
• Aakjaer,Jeppe
• Norfolk Island
• press on
• physical production
• shofrot
• pediatricians
• distender
• drink sth↔in
• turncap
• play the devil with
• pompousness
• Associate of Arts
• subfuscs
• hormonelike
• Justine
• detassel
• phase boundary
• discontinuations
• rearranged
• come to a pretty pass
• chucked
• pneumolith
• bath stone
• heat-shock puff
• retire from the stage
• brown spar
• Croatia
• panamanian
• be in bad, poor, the worst possible, etc. taste
• Oates, Titus
• rediffusion
• Lernaeopodoida
• vomitus
• ferociousnesses
• in an undertone
• embourgeoise
• Bon
• the school / academic year
• crossover network
• follower
• ab inconvenienti
• saith
• archsee
• macroscales
• enforced vacation
• upper crust
• teleplays
• cascades
• industrial yeast
• anhydrous wolframic acid
• cleanser