SHEETCAKE

TRUNCHEONStaff mid-morning meal starting late unfortunately, one behind time RATIONALEProportion and flair backing up the basis of one's argument LIPSCHITZGerman mathematician’s slip up with constant affected variable MAINPOINTBottom LINE of a speech BIRDWATCHWhat some Audubon Society members do with binoculars ... or a hint to 16- and 19-Across? SAFEHAVENSanctuary CONVINCEDAssured HOTMINUTEPretty long time, in an idiom SLOWLORISWill Ross love aroused primate? ROLEMODELSomeone to look up to TIPPYTOESWhat a child might stand on to watch a parade NOCTURNESNight airs destabilised vessels, we gather AUDIOBOOKNovel, we hear, about university detective and bespectacled bachelor – not bad!