"Turn on a dime" is a colloquial phrase meaning to change direction quickly and smoothly. It can be useful to have synonyms for this phrase when writing or speaking to keep language fresh and avoid repetition. Similar phrases include "pivot quickly," "make a sudden turn," "shift gears abruptly," "veer sharply," and "change course suddenly." Additionally, more playful synonyms include "whip a U-ey," "spin on a penny," "swerve suddenly," and "make a quick 180." Using these synonyms can add flair and variety to writing and conversations, while accurately conveying the idea of a sudden change in direction.