TIGHTLIPPED

OSTENTATIONVulgar display DOUBLEDUTCHGreek bigamist's requirement? PETPASSPORTDocument used for a travel companion who might sit under a seat ISAACNEWTONConservative cracking nuts was Etonian genius GRANDEDAMESDignified doyennes GAMEWARDENSConservation officers GRAVEACCENTMark on apres FUNCTIONING? WORKINGGIRLSee note SPACETRAVELSci-fi staple MIDDLESEATSThey might be the last to be booked on an airplane HAIRTRIGGERDevice on a firearm that responds to the slightest stimulus LINEOFSIGHTSpooner’s indicator of illumination shows how much one’s able to see (4,2,5) PAULBOATENGLabour Party politician who became the UK's first black Cabinet Minister in 2002