Definition of long since
- promises long since forgotten
- has long since been a devoted friend
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'long since.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
What made you want to look up long since? Please tell us where you read or heard it (including the quote, if possible).
investment of mental or emotional energy
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