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down-the-line

[doun-thuh-lahyn]
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adjective
  1. complete, full, unreserved, or whole-hearted: a down-the-line endorsement.
adverb
  1. fully; completely; whole-heartedly: Will you support it down-the-line?

Origin of down-the-line

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
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