Sword in hand is a common phrase used to describe someone ready for battle or physically prepared for a challenge. There are some synonyms that can be used to convey the same message. One such phrase is armed and dangerous, which implies that the person has a weapon and is willing to use it. Another synonym is ready to strike, which suggests that the person is poised to take action. Similarly, battle-ready can be used to indicate that someone is prepared to engage in combat. Other synonyms for sword in hand can include armed to the teeth, primed for action, and combat-ready. All of these phrases emphasize a sense of readiness and willingness to take action.