The phrase "up anchors" is typically used in a nautical context, meaning to lift or retrieve the anchors from the seabed in order to set sail. There are several synonyms that can be used to convey the same idea, such as "weigh anchors," "hoist anchors," "heave up anchors," or "raise anchors." These terms are used interchangeably depending on the context and the speaker's preference. It's important to note that in addition to the terminology used in nautical settings, the concept of "up anchors" has also been adopted in everyday language to mean preparing to depart or move on from a situation.