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“most grievous”
grievous, more grievous, most grievous (adjective forms)
1. Being extremely serious or significant: "The group made a bad financial investment and suffered grievous losses."
2. That which is very bad or severe: "The soldier suffered the most grievous wounds possible and yet he still survived."
2. That which is very bad or severe: "The soldier suffered the most grievous wounds possible and yet he still survived."