Here are some antonyms of cutlass, depending on the context you're using the word:
Based on function:
* Shield: A defensive weapon, the opposite of a sword's offensive purpose.
* Staff: A blunt weapon used for striking, not cutting.
* Spear: While a weapon, its use and purpose are distinct from a cutlass.
Based on type:
* Pistol: A firearm, a different weapon category altogether.
* Club: A blunt weapon, unlike a cutlass's bladed nature.
* Bow and arrow: A ranged weapon, distinct from the close-quarters combat of a cutlass.
Based on size:
* Knife: Smaller, less powerful than a cutlass.
* Dagger: Shorter, more easily concealed than a cutlass.
Based on lack of weapon:
* Tool: Something used for a specific task, not for combat.
* Utensil: A common household item, not a weapon.
Ultimately, the most accurate antonym will depend on the specific context in which you are using the word "cutlass."