Strong forces refer to the powerful energy and strength that exists between two or more objects. There are numerous synonyms that can be used to replace the phrase "strong forces." For example, terms such as compelling, formidable, resolute, robust, unyielding, and vigorous can all demonstrate the same meaning. Other synonyms include mighty, sturdy, potent, intense, commanding, and effective. All of these words convey a sense of power, energy, and stability that exemplify the concept of strong forces. Whether you are talking about gravity, electromagnetism, or any other type of force, using these synonyms can help to create a vivid description and convey a precise meaning.