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have been maturing

  • present perfect progressive
    of mature.
    mature
    adjective
    complete in natural growth or development, as plant and animal forms.

Example Sentences

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See Examples For:

These are extraordinary grain and malt whiskies that have been maturing slowly since 1952.

From BBC ● Jun. 7, 2011

Plans for rearranging Government functions within the Cabinet departments and, perhaps, creating new departments have been maturing for several years.

From Time Magazine Archive

To be frank with you, Robson, I have been maturing something of the kind.”

From The Kopje Garrison A Story of the Boer War by W. Boucher

The Elibank plot must have been maturing, though no light is thrown on it by the papers of the summer of 1752. 

From Pickle the Spy; Or, the Incognito of Prince Charles by Andrew Lang

The events of the last three days, Mercédès, have been maturing in the womb of Providence for the past ten years.

From Edmond Dantès by Edmund Flagg