All 5 Uses

mitigate
in
The Waves, by Virginia Woolf
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There were the floating, pale-grey clouds; and the immitigable tree; the implacable tree with its greaved silver bark.†
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immitigable = impossible to make less harmful or unpleasant

standard prefix: The prefix "im-" in immitigable means not and reverses the meaning of mitigable. This prefix is sometimes used before words beginning with "M" or "P" as seen in words like immoral, immature, and impossible.
But we are doomed, all of us, by the apple trees, by the immitigable tree which we cannot pass.†
Yet how painful to be recalled, to be mitigated, to have one's self adulterated, mixed up, become part of another.†

mitigated = made less harmful or unpleasant
And going upstairs I could not raise my foot against the immitigable apple tree with its silver leaves held stiff.†

immitigable = impossible to make less harmful or unpleasant

standard prefix: The prefix "im-" in immitigable means not and reverses the meaning of mitigable. This prefix is sometimes used before words beginning with "M" or "P" as seen in words like immoral, immature, and impossible.
I will stand for one moment beneath the immitigable tree, alone with the man whose throat is cut, while downstairs the cook shoves in and out the dampers.†

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