Weighing heavy is a phrase that describes a situation or a feeling of something being oppressive, burdensome, or overwhelming. It often denotes some sort of emotional or mental stress that a person is experiencing. There are several synonyms for this phrase, including weighing down, bearing down, pressing heavily, and burdening heavily. Another popular synonym is the phrase "weighing on one's mind," which implies a significant amount of mental weight or preoccupation. These phrases can be used to describe any situation that causes a person to feel weighed down or burdened, whether it's the loss of a loved one, work-related stress, or financial difficulties.