* Sharp: This is a very close synonym and captures the cutting, incisive quality of the defense's argument.
* Forceful: This emphasizes the strength and power of the defense's presentation.
* Persuasive: This highlights the ability of the defense to convince the jury.
* Poignant: This suggests the defense's argument was emotionally impactful.
* Cutting: This implies the defense's argument was direct and to the point, possibly challenging the opposing side.
* Articulate: This indicates the defense presented their case with clarity and skill.
The best synonym for your specific sentence would depend on the exact nuances you want to convey. For example, if you want to emphasize the intellectual sharpness of the argument, "sharp" or "articulate" might be good choices. If you want to emphasize the emotional impact, "poignant" might be more appropriate.