16d Code of silence practised by criminal organisations such as the Mafia.(6) (?m?r?a) 13d in existentialist philosophy, a feeling of dread arising from an awareness of one`s free will.(5) (a?gs?) 18d US state purchased from the Russian Empire for S 7, million in 1867.(6) (a?a?k?) 23d Final and fully developed stage of an insect produced after metamorphosis. (5) (?ma?o) 35d Aromatic yellow-flowered herb of the parsley family, Anethum graveolens.(4) (?i?l) is it dill ?