There are various synonyms for the term "strong" that can be used in different situations. Some of these synonyms include powerful, robust, firm, sturdy, resilient, tough, unyielding, hardy, and muscular. Powerful denotes a great deal of strength or the ability to exert force, while robust describes being healthy, hardy, and full of energy. Firm implies being securely fixed in place, while sturdy refers to being physically strong and resistant to damage. Resilient suggests the ability to recover from adversity, while tough describes strong and durable qualities in both physical and mental toughness. Unyielding implies being inflexible or rigid, while hardy suggests being able to withstand harsh weather conditions. Muscular refers to having well-developed muscles or physical strength.