AMELIORATE

ISLEOFDOGSReportedly, I adore residents of Battersea, part of London SOMEPEOPLE"Unbelievable!" ... or what 17-, 25-, 35- and 46-Across are made from, letter-wise? CONTAGIOUSLike laughter, sometimes DUSSELDORFEuropean city recovering from disappointment, investing not as much (10) ALASKAROLLSushi bite topped with salmon ENANTIOMERAwkwardly mention ear — it's one of a pair, the mirror image of the other KOOKABURRAThis bird sits in the old gum tree (10) BROOMSTICKWitch carrier (10) BEAUTYMARKEnhancing "blemish" (3x) EMANCIPATEEuropean chap worried about withdrawn photo's release SETTOMUSICNoted work? GARDENHOSEKid’s knocked over shed one rebuilt – a wind-up for the horticulturalist? (6,4) WORDLESSLYRecklessly sells dowry without a sound (10) FLEURDELISEngineer used filler for heraldic design (5-2-3)