[up.side] n [
[2]up + [1]side] (1927) 1: an upward trend (as of prices)
2: a positive aspect
[2]up.side prep [perh. fr. [1]up + -side (as in alongside)] (1929): up on or against the side of "layin' in this death cell, writin' my time ~ the wall --Lonnie Johnson" "if they wish to knock a thug ~ the head, they do so --Robert MacKenzie"