adj. Brit. colloq. 1 odd, strange, queer. 2 difficult, dangerous. rum go (or start) colloq. a surprising occurrence or unforeseen turn of affairs. rumly adv. rumness n.
[ 16th-c. cant, orig. = fine, spirited, perh. var. of ROM ]
RUM
Meaning of RUM in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012