The word "up-rights" can be confusing because it actually refers to two different things. Firstly, it can mean a type of post used in construction to support an upright structure. Secondly, it can refer to an individual's ability to stand or sit up straight with good posture. Synonyms for the post meaning include vertical support, post, pillar, and column. Synonyms for the posture meaning include erect, upright, standing tall, and sitting straight. Good posture is important not only for physical health but also for confidence and appearances, so it's worth practicing sitting and standing up-rights.