Holus-bolus refers to doing something all at once, or in one go. Synonyms for this phrase include "wholesale," "entirely," "completely," and "all-in." Another similar phrase is "lock, stock, and barrel," which means doing something completely from start to finish. Other synonyms for holus-bolus include "full tilt," "entirely," "with a vengeance," and "full throttle." The word "wholly" can also be used in place of holus-bolus; it means completely, or entirely. No matter which synonym is used, the idea is the same: doing something all at once, and completely.