[keep to oneself] See: [TO ONESELF] (2).

[keep track] {v. phr.} To know about changes; stay informed or […]

[keep under one's hat] {v. phr.}, {informal} To keep secret; not […]

[keep up] {v.} 1a. To go on; not stop; continue. * […]

[keep up appearances] {v. phr.} To maintain an outward show of […]

[keep up one's end] See: [HOLD ONE'S END UP].

[keep up with] See: [KEEP STEP WITH], [KEEP ABREAST OF].

[keep up with the Joneses] {v. phr.} To follow the latest […]

[keep watch] {v. phr.} To be vigilant; be alert; guard. * […]

[keep your fingers crossed] See: [CROSS ONE'S FINGERS].