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have been dirtying

  • present perfect progressive
    of dirty.
    dirty
    adjective
    soiled with dirt; foul; unclean.

Example Sentences

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They are quite new; but I have been dirtying them, outside, to make them look natural.

From Held Fast For England A Tale of the Siege of Gibraltar (1779-83) by G. A. (George Alfred) Henty