Adjective has 1 sense

• right-down(s = adj.all) absolute, downright, out-and-out, rank, sheer - complete and without restriction or qualification; sometimes used informally as intensifiers; "a downright lie"; "a rank outsider"; "absolute freedom"; "an absolute dimwit"; "an out-and-out lie"; "got the job through sheer persistence"; "many right-down vices"; "out-and-out mayhem"; "sheer stupidity"

Adverbial has 1 sense

• right-down(r = adv.all) - positively; "a regular right-down bad 'un"