0 much more of something than is needed, resulting in less effectiveness: --
Should I add an explanation, or would that be overkill?
1 much more of something than is needed or suitable: --
Running so fast with the competition so far behind might seem like overkill, but that’s Gardner.
Many of the speeches in the debate made me uncomfortable, and contained an overkill of political correctness.
Bad design, overkill and bad siting, not standardisation alone, is the enemy.
No disarmament agreement is going to reduce it below the level of overkill.
The conservation lobby, which is worthy but sometimes a tiny bit fanatical, brews up feelings that lead to statements which are essentially overkill.
There is such a thing as overkill.
It is also overkill, because changes in one region of the text are unlikely to affect the accentuation of the text in more or less distant regions.
One may wonder whether this accuracy is 'overkill', because small uncertainties in the data might cause much larger uncertainties in the computed results.
But the rhetorical overkill could become counterproductive.