adj. 25B6; adjective (Brit. informal) a plummy voice : UPPER-CLASS, refined, aristocratic, grand; Brit. Home Counties; Scottish Kelvinside, Morningside; Brit. informal posh, Sloaney.
PLUMMY
Meaning of PLUMMY in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012