[up front] (1) {n.}, {slang}, {informal} The managerial section of a […]

[up front] (2) {adj.}, {slang}, {informal} Open, sincere, hiding nothing. * […]

[up in arms] {adj. phr.} 1. Equipped with guns or weapons […]

[up in the air] {adj.} or {adv. phr.} 1. {informal} In […]

[up one's alley] See: [DOWN ONE'S ALLEY].

[up one's sleeve] or [in one's sleeve] {adv. phr.} 1. Hidden […]

[up the creek] or [up the creek without a paddle] {adj. […]

[up tight] or [uptight] {adj.}, {slang}, {informal} Worried, irritated, excessively eager […]

[up to] {prep.} 1. As far, as deep, or as high […]

[up to no good] {adv. phr.} Intending to do something bad; […]