Dreaming of sharpening a sword can symbolize preparation and empowerment. The act of sharpening suggests that you are honing your skills or abilities, possibly in anticipation of a challenge or conflict in your waking life. The wetstone represents a means of refinement, indicating that you are working through something to achieve clarity or precision.
The sword being very thin may suggest you are focusing on finesse or subtlety rather than brute strength. It might also indicate a need to be cautious in your approach to a situation, as a thinner blade can be more fragile. Consider what areas of your life require sharpening or improvement. Are there skills you are developing, or challenges you are preparing to face? This dream may encourage you to embrace your strengths while remaining mindful of their limitations.